Home / 394,546.16-591,893.51-128,382.81

Finding the Fourth Proportional to 394,546.16, 591,893.51 and 128,382.81

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Solution

The fourth proportional to 394,546.16, 591,893.51 and 128,382.81 is: 192,598.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,546.16 : 591,893.51 = 128,382.81 : x
  2. Step 2: Convert to fraction form
    394,546.16/591,893.51 = 128,382.81/x
  3. Step 3: Cross multiply
    394,546.16x = 591,893.51 × 128,382.81
  4. Step 4: Simplify right side
    394,546.16x = 75,988,951,392.65
  5. Step 5: Solve for x
    x = 75,988,951,392.65/394,546.16
  6. Step 6: Final answer
    x = 192,598.38

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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.