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Finding the Third Proportional to 415,400.25 and 622,407

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Solution

The third proportional to 415,400.25 and 622,407 is: 932,571.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,400.25 : 622,407 = 622,407 : x
  2. Step 2: Convert to fraction form
    415,400.25/622,407 = 622,407/x
  3. Step 3: Cross multiply
    415,400.25x = 622,407 × 622,407
  4. Step 4: Simplify right side
    415,400.25x = 387,390,473,649
  5. Step 5: Solve for x
    x = 387,390,473,649/415,400.25
  6. Step 6: Final answer
    x = 932,571.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.