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Finding the Fourth Proportional to 490,911.01, 677,452.95 and 276,046.50

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Solution

The fourth proportional to 490,911.01, 677,452.95 and 276,046.50 is: 380,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,911.01 : 677,452.95 = 276,046.50 : x
  2. Step 2: Convert to fraction form
    490,911.01/677,452.95 = 276,046.50/x
  3. Step 3: Cross multiply
    490,911.01x = 677,452.95 × 276,046.50
  4. Step 4: Simplify right side
    490,911.01x = 187,008,512,374.91
  5. Step 5: Solve for x
    x = 187,008,512,374.91/490,911.01
  6. Step 6: Final answer
    x = 380,941.78

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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.