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Finding the Third Proportional to 438,215.06 and 660,207.38

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Solution

The third proportional to 438,215.06 and 660,207.38 is: 994,657.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,215.06 : 660,207.38 = 660,207.38 : x
  2. Step 2: Convert to fraction form
    438,215.06/660,207.38 = 660,207.38/x
  3. Step 3: Cross multiply
    438,215.06x = 660,207.38 × 660,207.38
  4. Step 4: Simplify right side
    438,215.06x = 435,873,778,004.39
  5. Step 5: Solve for x
    x = 435,873,778,004.39/438,215.06
  6. Step 6: Final answer
    x = 994,657.22

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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.