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Finding the Fourth Proportional to 521,594.20, 782,391.28 and 284,807.71

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Solution

The fourth proportional to 521,594.20, 782,391.28 and 284,807.71 is: 427,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,594.20 : 782,391.28 = 284,807.71 : x
  2. Step 2: Convert to fraction form
    521,594.20/782,391.28 = 284,807.71/x
  3. Step 3: Cross multiply
    521,594.20x = 782,391.28 × 284,807.71
  4. Step 4: Simplify right side
    521,594.20x = 222,831,068,780.77
  5. Step 5: Solve for x
    x = 222,831,068,780.77/521,594.20
  6. Step 6: Final answer
    x = 427,211.55

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1.5x scale

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.