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Finding the Fourth Proportional to 548,082.70, 821,346.45 and 404,809.90

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Solution

The fourth proportional to 548,082.70, 821,346.45 and 404,809.90 is: 606,640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,082.70 : 821,346.45 = 404,809.90 : x
  2. Step 2: Convert to fraction form
    548,082.70/821,346.45 = 404,809.90/x
  3. Step 3: Cross multiply
    548,082.70x = 821,346.45 × 404,809.90
  4. Step 4: Simplify right side
    548,082.70x = 332,489,174,289.86
  5. Step 5: Solve for x
    x = 332,489,174,289.86/548,082.70
  6. Step 6: Final answer
    x = 606,640.52

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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.