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Finding the Third Proportional to 261,839 and 563,772

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Solution

The third proportional to 261,839 and 563,772 is: 1,213,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,839 : 563,772 = 563,772 : x
  2. Step 2: Convert to fraction form
    261,839/563,772 = 563,772/x
  3. Step 3: Cross multiply
    261,839x = 563,772 × 563,772
  4. Step 4: Simplify right side
    261,839x = 317,838,867,984
  5. Step 5: Solve for x
    x = 317,838,867,984/261,839
  6. Step 6: Final answer
    x = 1,213,871.38

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.