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Finding the Fourth Proportional to 548,872.05, 821,979.30 and 379,919.01

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Solution

The fourth proportional to 548,872.05, 821,979.30 and 379,919.01 is: 568,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,872.05 : 821,979.30 = 379,919.01 : x
  2. Step 2: Convert to fraction form
    548,872.05/821,979.30 = 379,919.01/x
  3. Step 3: Cross multiply
    548,872.05x = 821,979.30 × 379,919.01
  4. Step 4: Simplify right side
    548,872.05x = 312,285,561,896.49
  5. Step 5: Solve for x
    x = 312,285,561,896.49/548,872.05
  6. Step 6: Final answer
    x = 568,958.76

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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.