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Finding the Third Proportional to 419,752.88 and 665,661.75

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Solution

The third proportional to 419,752.88 and 665,661.75 is: 1,055,634.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,752.88 : 665,661.75 = 665,661.75 : x
  2. Step 2: Convert to fraction form
    419,752.88/665,661.75 = 665,661.75/x
  3. Step 3: Cross multiply
    419,752.88x = 665,661.75 × 665,661.75
  4. Step 4: Simplify right side
    419,752.88x = 443,105,565,413.06
  5. Step 5: Solve for x
    x = 443,105,565,413.06/419,752.88
  6. Step 6: Final answer
    x = 1,055,634.38

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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.