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Finding the Fourth Proportional to 625,278.96, 862,885.74 and 338,798.88

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Solution

The fourth proportional to 625,278.96, 862,885.74 and 338,798.88 is: 467,542.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,278.96 : 862,885.74 = 338,798.88 : x
  2. Step 2: Convert to fraction form
    625,278.96/862,885.74 = 338,798.88/x
  3. Step 3: Cross multiply
    625,278.96x = 862,885.74 × 338,798.88
  4. Step 4: Simplify right side
    625,278.96x = 292,344,722,279.97
  5. Step 5: Solve for x
    x = 292,344,722,279.97/625,278.96
  6. Step 6: Final answer
    x = 467,542.87

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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.