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Finding the Third Proportional to 729,017.25 and 981,398.25

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Solution

The third proportional to 729,017.25 and 981,398.25 is: 1,321,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,017.25 : 981,398.25 = 981,398.25 : x
  2. Step 2: Convert to fraction form
    729,017.25/981,398.25 = 981,398.25/x
  3. Step 3: Cross multiply
    729,017.25x = 981,398.25 × 981,398.25
  4. Step 4: Simplify right side
    729,017.25x = 963,142,525,103.06
  5. Step 5: Solve for x
    x = 963,142,525,103.06/729,017.25
  6. Step 6: Final answer
    x = 1,321,151.90

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.