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Finding the Fourth Proportional to 665,059.80, 996,909.30 and 327,581.40

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Solution

The fourth proportional to 665,059.80, 996,909.30 and 327,581.40 is: 491,036.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,059.80 : 996,909.30 = 327,581.40 : x
  2. Step 2: Convert to fraction form
    665,059.80/996,909.30 = 327,581.40/x
  3. Step 3: Cross multiply
    665,059.80x = 996,909.30 × 327,581.40
  4. Step 4: Simplify right side
    665,059.80x = 326,568,944,167.02
  5. Step 5: Solve for x
    x = 326,568,944,167.02/665,059.80
  6. Step 6: Final answer
    x = 491,036.96

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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.