280000000000 is what percent of 1.9E+15 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 1.9E+15 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 1.9E+15, so we can write it down as 100%=1.9E+15.
4. We know, that x% equals 280000000000 of the output value, so we can write it down as x%=280000000000.
5. Now we have two simple equations:
1) 100%=1.9E+15
2) x%=280000000000
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=1.9E+15/280000000000
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 280000000000 is what percent of 1.9E+15

100%/x%=1.9E+15/280000000000
(100/x)*x=(1.9E+15/280000000000)*x       - we multiply both sides of the equation by x
100=6785.7142857143*x       - we divide both sides of the equation by (6785.7142857143) to get x
100/6785.7142857143=x
0.014736842105263=x
x=0.014736842105263

now we have:
280000000000 is 0.014736842105263% of 1.9E+15