Finding the Fourth Proportional to 392,257,657.80, 588,386,486.70 and 331,791,481.80
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Solution
The fourth proportional to 392,257,657.80, 588,386,486.70 and 331,791,481.80 is: 497,687,222.70
Step by Step Solution
- Step 1: Write the proportion equation
392,257,657.80 : 588,386,486.70 = 331,791,481.80 : x - Step 2: Convert to fraction form
392,257,657.80/588,386,486.70 = 331,791,481.80/x - Step 3: Cross multiply
392,257,657.80x = 588,386,486.70 × 331,791,481.80 - Step 4: Simplify right side
392,257,657.80x = 195,221,624,293,289,024 - Step 5: Solve for x
x = 195,221,624,293,289,024/392,257,657.80 - Step 6: Final answer
x = 497,687,222.70
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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.