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Finding the Fourth Proportional to 664,458.30, 996,687.45 and 398,081.70

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Solution

The fourth proportional to 664,458.30, 996,687.45 and 398,081.70 is: 597,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,458.30 : 996,687.45 = 398,081.70 : x
  2. Step 2: Convert to fraction form
    664,458.30/996,687.45 = 398,081.70/x
  3. Step 3: Cross multiply
    664,458.30x = 996,687.45 × 398,081.70
  4. Step 4: Simplify right side
    664,458.30x = 396,763,034,464.67
  5. Step 5: Solve for x
    x = 396,763,034,464.67/664,458.30
  6. Step 6: Final answer
    x = 597,122.55

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Similar ratio
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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.