Finding the Fourth Proportional to 655,638,245.75, 904,873,064.85 and 417,407,331.09
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Solution
The fourth proportional to 655,638,245.75, 904,873,064.85 and 417,407,331.09 is: 576,080,869.94
Step by Step Solution
- Step 1: Write the proportion equation
655,638,245.75 : 904,873,064.85 = 417,407,331.09 : x - Step 2: Convert to fraction form
655,638,245.75/904,873,064.85 = 417,407,331.09/x - Step 3: Cross multiply
655,638,245.75x = 904,873,064.85 × 417,407,331.09 - Step 4: Simplify right side
655,638,245.75x = 377,700,650,976,095,040 - Step 5: Solve for x
x = 377,700,650,976,095,040/655,638,245.75 - Step 6: Final answer
x = 576,080,869.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.