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Finding the Third Proportional to 306,832 and 656,300

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Solution

The third proportional to 306,832 and 656,300 is: 1,403,796.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,832 : 656,300 = 656,300 : x
  2. Step 2: Convert to fraction form
    306,832/656,300 = 656,300/x
  3. Step 3: Cross multiply
    306,832x = 656,300 × 656,300
  4. Step 4: Simplify right side
    306,832x = 430,729,690,000
  5. Step 5: Solve for x
    x = 430,729,690,000/306,832
  6. Step 6: Final answer
    x = 1,403,796.51

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.