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Finding the Fourth Proportional to 664,310.60, 996,611.70 and 327,512.60

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Solution

The fourth proportional to 664,310.60, 996,611.70 and 327,512.60 is: 491,340.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,310.60 : 996,611.70 = 327,512.60 : x
  2. Step 2: Convert to fraction form
    664,310.60/996,611.70 = 327,512.60/x
  3. Step 3: Cross multiply
    664,310.60x = 996,611.70 × 327,512.60
  4. Step 4: Simplify right side
    664,310.60x = 326,402,889,057.42
  5. Step 5: Solve for x
    x = 326,402,889,057.42/664,310.60
  6. Step 6: Final answer
    x = 491,340.78

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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.