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Finding the Third Proportional to 311,670 and 682,461

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Solution

The third proportional to 311,670 and 682,461 is: 1,494,378.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,670 : 682,461 = 682,461 : x
  2. Step 2: Convert to fraction form
    311,670/682,461 = 682,461/x
  3. Step 3: Cross multiply
    311,670x = 682,461 × 682,461
  4. Step 4: Simplify right side
    311,670x = 465,753,016,521
  5. Step 5: Solve for x
    x = 465,753,016,521/311,670
  6. Step 6: Final answer
    x = 1,494,378.72

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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.