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Finding the Fourth Proportional to 490,937.30, 677,414.44 and 276,064.55

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Solution

The fourth proportional to 490,937.30, 677,414.44 and 276,064.55 is: 380,924.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,937.30 : 677,414.44 = 276,064.55 : x
  2. Step 2: Convert to fraction form
    490,937.30/677,414.44 = 276,064.55/x
  3. Step 3: Cross multiply
    490,937.30x = 677,414.44 × 276,064.55
  4. Step 4: Simplify right side
    490,937.30x = 187,010,115,850.87
  5. Step 5: Solve for x
    x = 187,010,115,850.87/490,937.30
  6. Step 6: Final answer
    x = 380,924.64

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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.