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Finding the Fourth Proportional to 548,058.70, 821,310.45 and 404,785.90

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Solution

The fourth proportional to 548,058.70, 821,310.45 and 404,785.90 is: 606,604.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,058.70 : 821,310.45 = 404,785.90 : x
  2. Step 2: Convert to fraction form
    548,058.70/821,310.45 = 404,785.90/x
  3. Step 3: Cross multiply
    548,058.70x = 821,310.45 × 404,785.90
  4. Step 4: Simplify right side
    548,058.70x = 332,454,889,682.66
  5. Step 5: Solve for x
    x = 332,454,889,682.66/548,058.70
  6. Step 6: Final answer
    x = 606,604.53

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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.