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Finding the Third Proportional to 747,078 and 1,121,382

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Solution

The third proportional to 747,078 and 1,121,382 is: 1,683,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,078 : 1,121,382 = 1,121,382 : x
  2. Step 2: Convert to fraction form
    747,078/1,121,382 = 1,121,382/x
  3. Step 3: Cross multiply
    747,078x = 1,121,382 × 1,121,382
  4. Step 4: Simplify right side
    747,078x = 1,257,497,589,924
  5. Step 5: Solve for x
    x = 1,257,497,589,924/747,078
  6. Step 6: Final answer
    x = 1,683,221.28

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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.