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Finding the Fourth Proportional to 547,834.78, 820,620.06 and 322,500.88

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Solution

The fourth proportional to 547,834.78, 820,620.06 and 322,500.88 is: 483,084.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,834.78 : 820,620.06 = 322,500.88 : x
  2. Step 2: Convert to fraction form
    547,834.78/820,620.06 = 322,500.88/x
  3. Step 3: Cross multiply
    547,834.78x = 820,620.06 × 322,500.88
  4. Step 4: Simplify right side
    547,834.78x = 264,650,691,495.65
  5. Step 5: Solve for x
    x = 264,650,691,495.65/547,834.78
  6. Step 6: Final answer
    x = 483,084.87

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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.