"Well your 100 percent wrong, GDP per capita is a measurement of national wealth. Essentially, it is a measure of the economic output of a nation on a per person level. For instance, a per capita GDP of $40,000 means that, on average, each person generates that amount of economic output. Of course, in reality, each person may earn far more or far less than this number.
It is important because it measures the relative wealth of a nation on a microeconomic scale. For instance, a country like Chad has a very low GDP (something like $500/per person) versus the USA (something like $45k/ per person). Huge difference in standard of living."
What is the GDP per capita, and why is it important.? - Yahoo! Answers
Lets say the USA has 300 million people and China has 1500 million people. Lets say they have the same GDP That means China has 1/5 the Percapita GDP of the USA, but China still has to provide roads, education, security, medical and thousands other services per person and then what little is left over defense and research and its going to be very little if they treat their citizens as well as the USA. The USA could spend 2/5th of the amount USA spends per citizen and still have 3/5 as much as China spends per citizens left over for defense and research or other national prioritys.
Lets say by the year 2015 China has 1.6 billion people and usa has 400 million and that each has 16 trillion GDP does that mean they are equal from an economic stand point, no that means China personal GDP is 10,000 and the USA is 40,000 per capita GDP
some one can check my math. It still means the US goverment can take 1/4 in taxs and still have 4 trillion to spend and americans have 30,000 per capita of their own to spend. If China takes 4000 then the chinese peope are going to have only 6000 per capita. Sooner or later the chinese people might get tired of that.