Home / 394,288.85-543,552.09-280,914.77

Finding the Fourth Proportional to 394,288.85, 543,552.09 and 280,914.77

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Solution

The fourth proportional to 394,288.85, 543,552.09 and 280,914.77 is: 387,258.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,288.85 : 543,552.09 = 280,914.77 : x
  2. Step 2: Convert to fraction form
    394,288.85/543,552.09 = 280,914.77/x
  3. Step 3: Cross multiply
    394,288.85x = 543,552.09 × 280,914.77
  4. Step 4: Simplify right side
    394,288.85x = 152,691,810,345.37
  5. Step 5: Solve for x
    x = 152,691,810,345.37/394,288.85
  6. Step 6: Final answer
    x = 387,258.76

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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.