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Finding the Fourth Proportional to 625,454.84, 863,129.18 and 338,974.86

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Solution

The fourth proportional to 625,454.84, 863,129.18 and 338,974.86 is: 467,786.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,454.84 : 863,129.18 = 338,974.86 : x
  2. Step 2: Convert to fraction form
    625,454.84/863,129.18 = 338,974.86/x
  3. Step 3: Cross multiply
    625,454.84x = 863,129.18 × 338,974.86
  4. Step 4: Simplify right side
    625,454.84x = 292,579,092,952.42
  5. Step 5: Solve for x
    x = 292,579,092,952.42/625,454.84
  6. Step 6: Final answer
    x = 467,786.12

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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.