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Finding the Fourth Proportional to 548,072.70, 821,331.45 and 404,799.90

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Solution

The fourth proportional to 548,072.70, 821,331.45 and 404,799.90 is: 606,625.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,072.70 : 821,331.45 = 404,799.90 : x
  2. Step 2: Convert to fraction form
    548,072.70/821,331.45 = 404,799.90/x
  3. Step 3: Cross multiply
    548,072.70x = 821,331.45 × 404,799.90
  4. Step 4: Simplify right side
    548,072.70x = 332,474,888,826.86
  5. Step 5: Solve for x
    x = 332,474,888,826.86/548,072.70
  6. Step 6: Final answer
    x = 606,625.52

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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.