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Finding the Fourth Proportional to 491,174.18, 677,813.60 and 276,314.18

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Solution

The fourth proportional to 491,174.18, 677,813.60 and 276,314.18 is: 381,309.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,174.18 : 677,813.60 = 276,314.18 : x
  2. Step 2: Convert to fraction form
    491,174.18/677,813.60 = 276,314.18/x
  3. Step 3: Cross multiply
    491,174.18x = 677,813.60 × 276,314.18
  4. Step 4: Simplify right side
    491,174.18x = 187,289,509,076.85
  5. Step 5: Solve for x
    x = 187,289,509,076.85/491,174.18
  6. Step 6: Final answer
    x = 381,309.76

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1.5x scale

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.