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Finding the Fourth Proportional to 664,478.60, 996,863.70 and 327,680.60

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Solution

The fourth proportional to 664,478.60, 996,863.70 and 327,680.60 is: 491,592.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,478.60 : 996,863.70 = 327,680.60 : x
  2. Step 2: Convert to fraction form
    664,478.60/996,863.70 = 327,680.60/x
  3. Step 3: Cross multiply
    664,478.60x = 996,863.70 × 327,680.60
  4. Step 4: Simplify right side
    664,478.60x = 326,652,895,334.22
  5. Step 5: Solve for x
    x = 326,652,895,334.22/664,478.60
  6. Step 6: Final answer
    x = 491,592.80

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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.