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Finding the Fourth Proportional to 664,463.10, 996,840.45 and 327,665.10

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Solution

The fourth proportional to 664,463.10, 996,840.45 and 327,665.10 is: 491,569.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,463.10 : 996,840.45 = 327,665.10 : x
  2. Step 2: Convert to fraction form
    664,463.10/996,840.45 = 327,665.10/x
  3. Step 3: Cross multiply
    664,463.10x = 996,840.45 × 327,665.10
  4. Step 4: Simplify right side
    664,463.10x = 326,629,825,733.30
  5. Step 5: Solve for x
    x = 326,629,825,733.30/664,463.10
  6. Step 6: Final answer
    x = 491,569.55

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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.