Home / 394,340.24-591,418.20-128,032.40

Finding the Fourth Proportional to 394,340.24, 591,418.20 and 128,032.40

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Solution

The fourth proportional to 394,340.24, 591,418.20 and 128,032.40 is: 192,018.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,340.24 : 591,418.20 = 128,032.40 : x
  2. Step 2: Convert to fraction form
    394,340.24/591,418.20 = 128,032.40/x
  3. Step 3: Cross multiply
    394,340.24x = 591,418.20 × 128,032.40
  4. Step 4: Simplify right side
    394,340.24x = 75,720,691,549.68
  5. Step 5: Solve for x
    x = 75,720,691,549.68/394,340.24
  6. Step 6: Final answer
    x = 192,018.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.