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Finding the Third Proportional to 638,534 and 1,376,725

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Solution

The third proportional to 638,534 and 1,376,725 is: 2,968,317.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,534 : 1,376,725 = 1,376,725 : x
  2. Step 2: Convert to fraction form
    638,534/1,376,725 = 1,376,725/x
  3. Step 3: Cross multiply
    638,534x = 1,376,725 × 1,376,725
  4. Step 4: Simplify right side
    638,534x = 1,895,371,725,625
  5. Step 5: Solve for x
    x = 1,895,371,725,625/638,534
  6. Step 6: Final answer
    x = 2,968,317.62

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.