Home / 394,280.82-543,541.08-280,906.74

Finding the Fourth Proportional to 394,280.82, 543,541.08 and 280,906.74

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Solution

The fourth proportional to 394,280.82, 543,541.08 and 280,906.74 is: 387,247.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,280.82 : 543,541.08 = 280,906.74 : x
  2. Step 2: Convert to fraction form
    394,280.82/543,541.08 = 280,906.74/x
  3. Step 3: Cross multiply
    394,280.82x = 543,541.08 × 280,906.74
  4. Step 4: Simplify right side
    394,280.82x = 152,684,352,838.88
  5. Step 5: Solve for x
    x = 152,684,352,838.88/394,280.82
  6. Step 6: Final answer
    x = 387,247.73

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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.