Home / 672,078.30-1,008,117.45-656,331.90

Finding the Fourth Proportional to 672,078.30, 1,008,117.45 and 656,331.90

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Solution

The fourth proportional to 672,078.30, 1,008,117.45 and 656,331.90 is: 984,497.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,078.30 : 1,008,117.45 = 656,331.90 : x
  2. Step 2: Convert to fraction form
    672,078.30/1,008,117.45 = 656,331.90/x
  3. Step 3: Cross multiply
    672,078.30x = 1,008,117.45 × 656,331.90
  4. Step 4: Simplify right side
    672,078.30x = 661,659,641,381.66
  5. Step 5: Solve for x
    x = 661,659,641,381.66/672,078.30
  6. Step 6: Final answer
    x = 984,497.85

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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.