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Finding the Third Proportional to 319,988.25 and 685,517.63

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Solution

The third proportional to 319,988.25 and 685,517.63 is: 1,468,598.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,988.25 : 685,517.63 = 685,517.63 : x
  2. Step 2: Convert to fraction form
    319,988.25/685,517.63 = 685,517.63/x
  3. Step 3: Cross multiply
    319,988.25x = 685,517.63 × 685,517.63
  4. Step 4: Simplify right side
    319,988.25x = 469,934,414,185.64
  5. Step 5: Solve for x
    x = 469,934,414,185.64/319,988.25
  6. Step 6: Final answer
    x = 1,468,598.97

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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.