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Finding the Third Proportional to 261,485 and 564,439

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Solution

The third proportional to 261,485 and 564,439 is: 1,218,392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,485 : 564,439 = 564,439 : x
  2. Step 2: Convert to fraction form
    261,485/564,439 = 564,439/x
  3. Step 3: Cross multiply
    261,485x = 564,439 × 564,439
  4. Step 4: Simplify right side
    261,485x = 318,591,384,721
  5. Step 5: Solve for x
    x = 318,591,384,721/261,485
  6. Step 6: Final answer
    x = 1,218,392.58

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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.