Finding the Fourth Proportional to 687,451,761.36, 948,703,592.52 and 374,206,407.12
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Solution
The fourth proportional to 687,451,761.36, 948,703,592.52 and 374,206,407.12 is: 516,415,816.69
Step by Step Solution
- Step 1: Write the proportion equation
687,451,761.36 : 948,703,592.52 = 374,206,407.12 : x - Step 2: Convert to fraction form
687,451,761.36/948,703,592.52 = 374,206,407.12/x - Step 3: Cross multiply
687,451,761.36x = 948,703,592.52 × 374,206,407.12 - Step 4: Simplify right side
687,451,761.36x = 355,010,962,778,745,728 - Step 5: Solve for x
x = 355,010,962,778,745,728/687,451,761.36 - Step 6: Final answer
x = 516,415,816.69
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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.