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Finding the Fourth Proportional to 625,411.60, 863,068.74 and 338,931.68

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Solution

The fourth proportional to 625,411.60, 863,068.74 and 338,931.68 is: 467,726.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,411.60 : 863,068.74 = 338,931.68 : x
  2. Step 2: Convert to fraction form
    625,411.60/863,068.74 = 338,931.68/x
  3. Step 3: Cross multiply
    625,411.60x = 863,068.74 × 338,931.68
  4. Step 4: Simplify right side
    625,411.60x = 292,521,332,417.35
  5. Step 5: Solve for x
    x = 292,521,332,417.35/625,411.60
  6. Step 6: Final answer
    x = 467,726.11

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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.