What is 1234567890 percent of 9987654321 - 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 9987654321 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 9987654321 is 100%, so we can write it down as 9987654321=100%.
4. We know, that x is 1234567890% of the output value, so we can write it down as x=1234567890%.
5. Now we have two simple equations:
1) 9987654321=100%
2) x=1234567890%
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:
9987654321/x=100%/1234567890%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 1234567890% of 9987654321

9987654321/x=100/1234567890
(9987654321/x)*x=(100/1234567890)*x       - we multiply both sides of the equation by x
9987654321=8.10000007371E-8*x       - we divide both sides of the equation by (8.10000007371E-8) to get x
9987654321/8.10000007371E-8=x
1.2330437321126E+17=x
x=1.2330437321126E+17

now we have:
1234567890% of 9987654321=1.2330437321126E+17