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Finding the Fourth Proportional to 664,280.60, 996,420.90 and 451,704.20

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Solution

The fourth proportional to 664,280.60, 996,420.90 and 451,704.20 is: 677,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,280.60 : 996,420.90 = 451,704.20 : x
  2. Step 2: Convert to fraction form
    664,280.60/996,420.90 = 451,704.20/x
  3. Step 3: Cross multiply
    664,280.60x = 996,420.90 × 451,704.20
  4. Step 4: Simplify right side
    664,280.60x = 450,087,505,497.78
  5. Step 5: Solve for x
    x = 450,087,505,497.78/664,280.60
  6. Step 6: Final answer
    x = 677,556.30

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Double scale
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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.