Home / 715,197.41-986,972.82-392,928.27

Finding the Fourth Proportional to 715,197.41, 986,972.82 and 392,928.27

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Solution

The fourth proportional to 715,197.41, 986,972.82 and 392,928.27 is: 542,241.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,197.41 : 986,972.82 = 392,928.27 : x
  2. Step 2: Convert to fraction form
    715,197.41/986,972.82 = 392,928.27/x
  3. Step 3: Cross multiply
    715,197.41x = 986,972.82 × 392,928.27
  4. Step 4: Simplify right side
    715,197.41x = 387,809,520,840.33
  5. Step 5: Solve for x
    x = 387,809,520,840.33/715,197.41
  6. Step 6: Final answer
    x = 542,241.23

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1.5x scale

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.