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Finding the Fourth Proportional to 664,427.76, 996,605.92 and 327,132.16

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Solution

The fourth proportional to 664,427.76, 996,605.92 and 327,132.16 is: 490,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,427.76 : 996,605.92 = 327,132.16 : x
  2. Step 2: Convert to fraction form
    664,427.76/996,605.92 = 327,132.16/x
  3. Step 3: Cross multiply
    664,427.76x = 996,605.92 × 327,132.16
  4. Step 4: Simplify right side
    664,427.76x = 326,021,847,278.39
  5. Step 5: Solve for x
    x = 326,021,847,278.39/664,427.76
  6. Step 6: Final answer
    x = 490,680.65

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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.