Finding the Fourth Proportional to 386,587,726.92, 533,491,150.59 and 212,747,470.92
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Solution
The fourth proportional to 386,587,726.92, 533,491,150.59 and 212,747,470.92 is: 293,591,557.99
Step by Step Solution
- Step 1: Write the proportion equation
386,587,726.92 : 533,491,150.59 = 212,747,470.92 : x - Step 2: Convert to fraction form
386,587,726.92/533,491,150.59 = 212,747,470.92/x - Step 3: Cross multiply
386,587,726.92x = 533,491,150.59 × 212,747,470.92 - Step 4: Simplify right side
386,587,726.92x = 113,498,893,046,223,360 - Step 5: Solve for x
x = 113,498,893,046,223,360/386,587,726.92 - Step 6: Final answer
x = 293,591,557.99
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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.