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Finding the Fourth Proportional to 410,905.60, 615,321.60 and 327,961.60

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Solution

The fourth proportional to 410,905.60, 615,321.60 and 327,961.60 is: 491,114.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,905.60 : 615,321.60 = 327,961.60 : x
  2. Step 2: Convert to fraction form
    410,905.60/615,321.60 = 327,961.60/x
  3. Step 3: Cross multiply
    410,905.60x = 615,321.60 × 327,961.60
  4. Step 4: Simplify right side
    410,905.60x = 201,801,856,450.56
  5. Step 5: Solve for x
    x = 201,801,856,450.56/410,905.60
  6. Step 6: Final answer
    x = 491,114.88

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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.