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Finding the Fourth Proportional to 521,595.20, 782,392.78 and 284,808.71

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Solution

The fourth proportional to 521,595.20, 782,392.78 and 284,808.71 is: 427,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,595.20 : 782,392.78 = 284,808.71 : x
  2. Step 2: Convert to fraction form
    521,595.20/782,392.78 = 284,808.71/x
  3. Step 3: Cross multiply
    521,595.20x = 782,392.78 × 284,808.71
  4. Step 4: Simplify right side
    521,595.20x = 222,832,278,385.11
  5. Step 5: Solve for x
    x = 222,832,278,385.11/521,595.20
  6. Step 6: Final answer
    x = 427,213.05

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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.