Home / 491,021.60-677,531.70-276,120.14

Finding the Fourth Proportional to 491,021.60, 677,531.70 and 276,120.14

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Solution

The fourth proportional to 491,021.60, 677,531.70 and 276,120.14 is: 381,001.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,021.60 : 677,531.70 = 276,120.14 : x
  2. Step 2: Convert to fraction form
    491,021.60/677,531.70 = 276,120.14/x
  3. Step 3: Cross multiply
    491,021.60x = 677,531.70 × 276,120.14
  4. Step 4: Simplify right side
    491,021.60x = 187,080,144,470.78
  5. Step 5: Solve for x
    x = 187,080,144,470.78/491,021.60
  6. Step 6: Final answer
    x = 381,001.87

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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.