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Finding the Fourth Proportional to 665,138.60, 997,707.90 and 452,562.20

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Solution

The fourth proportional to 665,138.60, 997,707.90 and 452,562.20 is: 678,843.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,138.60 : 997,707.90 = 452,562.20 : x
  2. Step 2: Convert to fraction form
    665,138.60/997,707.90 = 452,562.20/x
  3. Step 3: Cross multiply
    665,138.60x = 997,707.90 × 452,562.20
  4. Step 4: Simplify right side
    665,138.60x = 451,524,882,181.38
  5. Step 5: Solve for x
    x = 451,524,882,181.38/665,138.60
  6. Step 6: Final answer
    x = 678,843.30

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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.