Finding the Fourth Proportional to 392,257,477.80, 588,386,216.70 and 331,791,301.80
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Solution
The fourth proportional to 392,257,477.80, 588,386,216.70 and 331,791,301.80 is: 497,686,952.70
Step by Step Solution
- Step 1: Write the proportion equation
392,257,477.80 : 588,386,216.70 = 331,791,301.80 : x - Step 2: Convert to fraction form
392,257,477.80/588,386,216.70 = 331,791,301.80/x - Step 3: Cross multiply
392,257,477.80x = 588,386,216.70 × 331,791,301.80 - Step 4: Simplify right side
392,257,477.80x = 195,221,428,800,069,920 - Step 5: Solve for x
x = 195,221,428,800,069,920/392,257,477.80 - Step 6: Final answer
x = 497,686,952.70
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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.