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Finding the Fourth Proportional to 664,990.60, 996,829.80 and 327,755.20

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Solution

The fourth proportional to 664,990.60, 996,829.80 and 327,755.20 is: 491,309.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,990.60 : 996,829.80 = 327,755.20 : x
  2. Step 2: Convert to fraction form
    664,990.60/996,829.80 = 327,755.20/x
  3. Step 3: Cross multiply
    664,990.60x = 996,829.80 × 327,755.20
  4. Step 4: Simplify right side
    664,990.60x = 326,716,150,464.96
  5. Step 5: Solve for x
    x = 326,716,150,464.96/664,990.60
  6. Step 6: Final answer
    x = 491,309.43

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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.