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Finding the Third Proportional to 392,652 and 622,752.75

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Solution

The third proportional to 392,652 and 622,752.75 is: 987,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,652 : 622,752.75 = 622,752.75 : x
  2. Step 2: Convert to fraction form
    392,652/622,752.75 = 622,752.75/x
  3. Step 3: Cross multiply
    392,652x = 622,752.75 × 622,752.75
  4. Step 4: Simplify right side
    392,652x = 387,820,987,632.56
  5. Step 5: Solve for x
    x = 387,820,987,632.56/392,652
  6. Step 6: Final answer
    x = 987,696.45

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.