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Finding the Fourth Proportional to 547,700.06, 820,834.36 and 396,406.55

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Solution

The fourth proportional to 547,700.06, 820,834.36 and 396,406.55 is: 594,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,700.06 : 820,834.36 = 396,406.55 : x
  2. Step 2: Convert to fraction form
    547,700.06/820,834.36 = 396,406.55/x
  3. Step 3: Cross multiply
    547,700.06x = 820,834.36 × 396,406.55
  4. Step 4: Simplify right side
    547,700.06x = 325,384,117,830.13
  5. Step 5: Solve for x
    x = 325,384,117,830.13/547,700.06
  6. Step 6: Final answer
    x = 594,091.80

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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.