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Finding the Third Proportional to 311,724 and 675,918

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Solution

The third proportional to 311,724 and 675,918 is: 1,465,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,724 : 675,918 = 675,918 : x
  2. Step 2: Convert to fraction form
    311,724/675,918 = 675,918/x
  3. Step 3: Cross multiply
    311,724x = 675,918 × 675,918
  4. Step 4: Simplify right side
    311,724x = 456,865,142,724
  5. Step 5: Solve for x
    x = 456,865,142,724/311,724
  6. Step 6: Final answer
    x = 1,465,607.85

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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.