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Finding the Fourth Proportional to 625,195.70, 862,770.92 and 338,715.79

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Solution

The fourth proportional to 625,195.70, 862,770.92 and 338,715.79 is: 467,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,195.70 : 862,770.92 = 338,715.79 : x
  2. Step 2: Convert to fraction form
    625,195.70/862,770.92 = 338,715.79/x
  3. Step 3: Cross multiply
    625,195.70x = 862,770.92 × 338,715.79
  4. Step 4: Simplify right side
    625,195.70x = 292,234,129,906.32
  5. Step 5: Solve for x
    x = 292,234,129,906.32/625,195.70
  6. Step 6: Final answer
    x = 467,428.25

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1.5x scale

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.