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Finding the Fourth Proportional to 612,082.78, 844,607.16 and 353,920.66

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Solution

The fourth proportional to 612,082.78, 844,607.16 and 353,920.66 is: 488,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,082.78 : 844,607.16 = 353,920.66 : x
  2. Step 2: Convert to fraction form
    612,082.78/844,607.16 = 353,920.66/x
  3. Step 3: Cross multiply
    612,082.78x = 844,607.16 × 353,920.66
  4. Step 4: Simplify right side
    612,082.78x = 298,923,923,507.93
  5. Step 5: Solve for x
    x = 298,923,923,507.93/612,082.78
  6. Step 6: Final answer
    x = 488,371.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.