Home / 394,286.85-543,549.33-280,912.77

Finding the Fourth Proportional to 394,286.85, 543,549.33 and 280,912.77

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Solution

The fourth proportional to 394,286.85, 543,549.33 and 280,912.77 is: 387,256.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,286.85 : 543,549.33 = 280,912.77 : x
  2. Step 2: Convert to fraction form
    394,286.85/543,549.33 = 280,912.77/x
  3. Step 3: Cross multiply
    394,286.85x = 543,549.33 × 280,912.77
  4. Step 4: Simplify right side
    394,286.85x = 152,689,947,921.94
  5. Step 5: Solve for x
    x = 152,689,947,921.94/394,286.85
  6. Step 6: Final answer
    x = 387,256.00

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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.