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Finding the Third Proportional to 319,168 and 691,524

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Solution

The third proportional to 319,168 and 691,524 is: 1,498,287.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,168 : 691,524 = 691,524 : x
  2. Step 2: Convert to fraction form
    319,168/691,524 = 691,524/x
  3. Step 3: Cross multiply
    319,168x = 691,524 × 691,524
  4. Step 4: Simplify right side
    319,168x = 478,205,442,576
  5. Step 5: Solve for x
    x = 478,205,442,576/319,168
  6. Step 6: Final answer
    x = 1,498,287.56

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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.