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Finding the Fourth Proportional to 664,658.10, 996,987.15 and 452,081.70

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Solution

The fourth proportional to 664,658.10, 996,987.15 and 452,081.70 is: 678,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,658.10 : 996,987.15 = 452,081.70 : x
  2. Step 2: Convert to fraction form
    664,658.10/996,987.15 = 452,081.70/x
  3. Step 3: Cross multiply
    664,658.10x = 996,987.15 × 452,081.70
  4. Step 4: Simplify right side
    664,658.10x = 450,719,645,650.16
  5. Step 5: Solve for x
    x = 450,719,645,650.16/664,658.10
  6. Step 6: Final answer
    x = 678,122.55

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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.