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Finding the Fourth Proportional to 521,737.80, 781,569.90 and 299,862.60

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Solution

The fourth proportional to 521,737.80, 781,569.90 and 299,862.60 is: 449,198.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,737.80 : 781,569.90 = 299,862.60 : x
  2. Step 2: Convert to fraction form
    521,737.80/781,569.90 = 299,862.60/x
  3. Step 3: Cross multiply
    521,737.80x = 781,569.90 × 299,862.60
  4. Step 4: Simplify right side
    521,737.80x = 234,363,582,295.74
  5. Step 5: Solve for x
    x = 234,363,582,295.74/521,737.80
  6. Step 6: Final answer
    x = 449,198.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.