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Finding the Third Proportional to 311,736 and 676,608

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Solution

The third proportional to 311,736 and 676,608 is: 1,468,545.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,736 : 676,608 = 676,608 : x
  2. Step 2: Convert to fraction form
    311,736/676,608 = 676,608/x
  3. Step 3: Cross multiply
    311,736x = 676,608 × 676,608
  4. Step 4: Simplify right side
    311,736x = 457,798,385,664
  5. Step 5: Solve for x
    x = 457,798,385,664/311,736
  6. Step 6: Final answer
    x = 1,468,545.13

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.