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Finding the Fourth Proportional to 521,397.52, 782,392.11 and 281,508.21

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Solution

The fourth proportional to 521,397.52, 782,392.11 and 281,508.21 is: 422,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,397.52 : 782,392.11 = 281,508.21 : x
  2. Step 2: Convert to fraction form
    521,397.52/782,392.11 = 281,508.21/x
  3. Step 3: Cross multiply
    521,397.52x = 782,392.11 × 281,508.21
  4. Step 4: Simplify right side
    521,397.52x = 220,249,802,404.22
  5. Step 5: Solve for x
    x = 220,249,802,404.22/521,397.52
  6. Step 6: Final answer
    x = 422,422.04

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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.