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Finding the Fourth Proportional to 521,601.72, 782,402.55 and 284,815.23

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Solution

The fourth proportional to 521,601.72, 782,402.55 and 284,815.23 is: 427,222.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,601.72 : 782,402.55 = 284,815.23 : x
  2. Step 2: Convert to fraction form
    521,601.72/782,402.55 = 284,815.23/x
  3. Step 3: Cross multiply
    521,601.72x = 782,402.55 × 284,815.23
  4. Step 4: Simplify right side
    521,601.72x = 222,840,162,230.84
  5. Step 5: Solve for x
    x = 222,840,162,230.84/521,601.72
  6. Step 6: Final answer
    x = 427,222.83

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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.