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Finding the Fourth Proportional to 664,489.60, 996,880.20 and 327,691.60

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Solution

The fourth proportional to 664,489.60, 996,880.20 and 327,691.60 is: 491,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,489.60 : 996,880.20 = 327,691.60 : x
  2. Step 2: Convert to fraction form
    664,489.60/996,880.20 = 327,691.60/x
  3. Step 3: Cross multiply
    664,489.60x = 996,880.20 × 327,691.60
  4. Step 4: Simplify right side
    664,489.60x = 326,669,267,746.32
  5. Step 5: Solve for x
    x = 326,669,267,746.32/664,489.60
  6. Step 6: Final answer
    x = 491,609.30

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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.