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Finding the Fourth Proportional to 627,345.60, 940,672.80 and 206,404.80

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Solution

The fourth proportional to 627,345.60, 940,672.80 and 206,404.80 is: 309,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,345.60 : 940,672.80 = 206,404.80 : x
  2. Step 2: Convert to fraction form
    627,345.60/940,672.80 = 206,404.80/x
  3. Step 3: Cross multiply
    627,345.60x = 940,672.80 × 206,404.80
  4. Step 4: Simplify right side
    627,345.60x = 194,159,381,149.44
  5. Step 5: Solve for x
    x = 194,159,381,149.44/627,345.60
  6. Step 6: Final answer
    x = 309,493.49

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Similar ratio
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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.