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Finding the Third Proportional to 402,786 and 564,624

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Solution

The third proportional to 402,786 and 564,624 is: 791,487.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,786 : 564,624 = 564,624 : x
  2. Step 2: Convert to fraction form
    402,786/564,624 = 564,624/x
  3. Step 3: Cross multiply
    402,786x = 564,624 × 564,624
  4. Step 4: Simplify right side
    402,786x = 318,800,261,376
  5. Step 5: Solve for x
    x = 318,800,261,376/402,786
  6. Step 6: Final answer
    x = 791,487.94

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.