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Finding the Third Proportional to 311,665 and 682,446

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Solution

The third proportional to 311,665 and 682,446 is: 1,494,337.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,665 : 682,446 = 682,446 : x
  2. Step 2: Convert to fraction form
    311,665/682,446 = 682,446/x
  3. Step 3: Cross multiply
    311,665x = 682,446 × 682,446
  4. Step 4: Simplify right side
    311,665x = 465,732,542,916
  5. Step 5: Solve for x
    x = 465,732,542,916/311,665
  6. Step 6: Final answer
    x = 1,494,337.01

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.