Finding the Fourth Proportional to 647,694,838.40, 971,542,257.60 and 531,468,691.70
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Solution
The fourth proportional to 647,694,838.40, 971,542,257.60 and 531,468,691.70 is: 797,203,037.55
Step by Step Solution
- Step 1: Write the proportion equation
647,694,838.40 : 971,542,257.60 = 531,468,691.70 : x - Step 2: Convert to fraction form
647,694,838.40/971,542,257.60 = 531,468,691.70/x - Step 3: Cross multiply
647,694,838.40x = 971,542,257.60 × 531,468,691.70 - Step 4: Simplify right side
647,694,838.40x = 516,344,292,577,936,384 - Step 5: Solve for x
x = 516,344,292,577,936,384/647,694,838.40 - Step 6: Final answer
x = 797,203,037.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.