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Finding the Fourth Proportional to 625,164, 862,726.68 and 338,686.08

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Solution

The fourth proportional to 625,164, 862,726.68 and 338,686.08 is: 467,386.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,164 : 862,726.68 = 338,686.08 : x
  2. Step 2: Convert to fraction form
    625,164/862,726.68 = 338,686.08/x
  3. Step 3: Cross multiply
    625,164x = 862,726.68 × 338,686.08
  4. Step 4: Simplify right side
    625,164x = 292,193,517,360.61
  5. Step 5: Solve for x
    x = 292,193,517,360.61/625,164
  6. Step 6: Final answer
    x = 467,386.99

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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.