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Finding the Fourth Proportional to 664,477.60, 996,862.20 and 327,679.60

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Solution

The fourth proportional to 664,477.60, 996,862.20 and 327,679.60 is: 491,591.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,477.60 : 996,862.20 = 327,679.60 : x
  2. Step 2: Convert to fraction form
    664,477.60/996,862.20 = 327,679.60/x
  3. Step 3: Cross multiply
    664,477.60x = 996,862.20 × 327,679.60
  4. Step 4: Simplify right side
    664,477.60x = 326,651,406,951.12
  5. Step 5: Solve for x
    x = 326,651,406,951.12/664,477.60
  6. Step 6: Final answer
    x = 491,591.30

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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.