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Finding the Fourth Proportional to 665,020.80, 996,850.80 and 327,542.40

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Solution

The fourth proportional to 665,020.80, 996,850.80 and 327,542.40 is: 490,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,020.80 : 996,850.80 = 327,542.40 : x
  2. Step 2: Convert to fraction form
    665,020.80/996,850.80 = 327,542.40/x
  3. Step 3: Cross multiply
    665,020.80x = 996,850.80 × 327,542.40
  4. Step 4: Simplify right side
    665,020.80x = 326,510,903,473.92
  5. Step 5: Solve for x
    x = 326,510,903,473.92/665,020.80
  6. Step 6: Final answer
    x = 490,978.48

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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.