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Finding the Fourth Proportional to 547,680.56, 820,786.49 and 426,247.73

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Solution

The fourth proportional to 547,680.56, 820,786.49 and 426,247.73 is: 638,800.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,680.56 : 820,786.49 = 426,247.73 : x
  2. Step 2: Convert to fraction form
    547,680.56/820,786.49 = 426,247.73/x
  3. Step 3: Cross multiply
    547,680.56x = 820,786.49 × 426,247.73
  4. Step 4: Simplify right side
    547,680.56x = 349,858,371,942.00
  5. Step 5: Solve for x
    x = 349,858,371,942.00/547,680.56
  6. Step 6: Final answer
    x = 638,800.06

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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.