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Finding the Third Proportional to 638,505.76 and 955,999.85

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Solution

The third proportional to 638,505.76 and 955,999.85 is: 1,431,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,505.76 : 955,999.85 = 955,999.85 : x
  2. Step 2: Convert to fraction form
    638,505.76/955,999.85 = 955,999.85/x
  3. Step 3: Cross multiply
    638,505.76x = 955,999.85 × 955,999.85
  4. Step 4: Simplify right side
    638,505.76x = 913,935,713,386.86
  5. Step 5: Solve for x
    x = 913,935,713,386.86/638,505.76
  6. Step 6: Final answer
    x = 1,431,366.44

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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.