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Finding the Fourth Proportional to 526,439.97, 726,487.15 and 284,722.55

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Solution

The fourth proportional to 526,439.97, 726,487.15 and 284,722.55 is: 392,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,439.97 : 726,487.15 = 284,722.55 : x
  2. Step 2: Convert to fraction form
    526,439.97/726,487.15 = 284,722.55/x
  3. Step 3: Cross multiply
    526,439.97x = 726,487.15 × 284,722.55
  4. Step 4: Simplify right side
    526,439.97x = 206,847,273,890.23
  5. Step 5: Solve for x
    x = 206,847,273,890.23/526,439.97
  6. Step 6: Final answer
    x = 392,917.11

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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.