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Finding the Third Proportional to 282,538 and 426,687

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Solution

The third proportional to 282,538 and 426,687 is: 644,379.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,538 : 426,687 = 426,687 : x
  2. Step 2: Convert to fraction form
    282,538/426,687 = 426,687/x
  3. Step 3: Cross multiply
    282,538x = 426,687 × 426,687
  4. Step 4: Simplify right side
    282,538x = 182,061,795,969
  5. Step 5: Solve for x
    x = 182,061,795,969/282,538
  6. Step 6: Final answer
    x = 644,379.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.