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Finding the Fourth Proportional to 665,037.80, 996,876.30 and 327,559.40

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Solution

The fourth proportional to 665,037.80, 996,876.30 and 327,559.40 is: 491,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,037.80 : 996,876.30 = 327,559.40 : x
  2. Step 2: Convert to fraction form
    665,037.80/996,876.30 = 327,559.40/x
  3. Step 3: Cross multiply
    665,037.80x = 996,876.30 × 327,559.40
  4. Step 4: Simplify right side
    665,037.80x = 326,536,202,702.22
  5. Step 5: Solve for x
    x = 326,536,202,702.22/665,037.80
  6. Step 6: Final answer
    x = 491,003.97

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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.