The population of Russia is ~146.7M [0]
The population of China is ~1,403M (~1.4B) [1]
This makes China ~9.6 times larger than Russia.
The US is ~327M [2], which makes China about ~4.3 times as large.
It's a big difference, but not as large as 77x.
[0] - https://en.wikipedia.org/wiki/Russia
[1] - https://en.wikipedia.org/wiki/China
[2] - https://en.wikipedia.org/wiki/United_States
My 77x was about Russia and China, not the US, but you're right I had a "off my one" error in my math. It's more like 9.6x.
The population of Russia is ~146.7M [0]
The population of China is ~1,403M (~1.4B) [1]
This makes China ~9.6 times larger than Russia.
The US is ~327M [2], which makes China about ~4.3 times as large.
It's a big difference, but not as large as 77x.
[0] - https://en.wikipedia.org/wiki/Russia
[1] - https://en.wikipedia.org/wiki/China
[2] - https://en.wikipedia.org/wiki/United_States