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Finding the Third Proportional to 261,509 and 564,490

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Solution

The third proportional to 261,509 and 564,490 is: 1,218,500.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,509 : 564,490 = 564,490 : x
  2. Step 2: Convert to fraction form
    261,509/564,490 = 564,490/x
  3. Step 3: Cross multiply
    261,509x = 564,490 × 564,490
  4. Step 4: Simplify right side
    261,509x = 318,648,960,100
  5. Step 5: Solve for x
    x = 318,648,960,100/261,509
  6. Step 6: Final answer
    x = 1,218,500.93

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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.