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Finding the Fourth Proportional to 490,951.52, 677,506.64 and 276,091.53

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Solution

The fourth proportional to 490,951.52, 677,506.64 and 276,091.53 is: 381,002.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,951.52 : 677,506.64 = 276,091.53 : x
  2. Step 2: Convert to fraction form
    490,951.52/677,506.64 = 276,091.53/x
  3. Step 3: Cross multiply
    490,951.52x = 677,506.64 × 276,091.53
  4. Step 4: Simplify right side
    490,951.52x = 187,053,844,822.76
  5. Step 5: Solve for x
    x = 187,053,844,822.76/490,951.52
  6. Step 6: Final answer
    x = 381,002.68

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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.