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Finding the Fourth Proportional to 871,641.06, 1,202,857.41 and 489,659.64

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Solution

The fourth proportional to 871,641.06, 1,202,857.41 and 489,659.64 is: 675,726.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,641.06 : 1,202,857.41 = 489,659.64 : x
  2. Step 2: Convert to fraction form
    871,641.06/1,202,857.41 = 489,659.64/x
  3. Step 3: Cross multiply
    871,641.06x = 1,202,857.41 × 489,659.64
  4. Step 4: Simplify right side
    871,641.06x = 588,990,726,351.93
  5. Step 5: Solve for x
    x = 588,990,726,351.93/871,641.06
  6. Step 6: Final answer
    x = 675,726.23

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.