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Finding the Fourth Proportional to 871,447.61, 1,202,740.40 and 726,022.80

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Solution

The fourth proportional to 871,447.61, 1,202,740.40 and 726,022.80 is: 1,002,030.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,447.61 : 1,202,740.40 = 726,022.80 : x
  2. Step 2: Convert to fraction form
    871,447.61/1,202,740.40 = 726,022.80/x
  3. Step 3: Cross multiply
    871,447.61x = 1,202,740.40 × 726,022.80
  4. Step 4: Simplify right side
    871,447.61x = 873,216,944,517.31
  5. Step 5: Solve for x
    x = 873,216,944,517.31/871,447.61
  6. Step 6: Final answer
    x = 1,002,030.34

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Why These Related Problems?

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