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Finding the Fourth Proportional to 625,155.20, 862,714.09 and 338,675.21

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Solution

The fourth proportional to 625,155.20, 862,714.09 and 338,675.21 is: 467,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,155.20 : 862,714.09 = 338,675.21 : x
  2. Step 2: Convert to fraction form
    625,155.20/862,714.09 = 338,675.21/x
  3. Step 3: Cross multiply
    625,155.20x = 862,714.09 × 338,675.21
  4. Step 4: Simplify right side
    625,155.20x = 292,179,875,600.71
  5. Step 5: Solve for x
    x = 292,179,875,600.71/625,155.20
  6. Step 6: Final answer
    x = 467,371.74

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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.