Home / 491,021.71-677,531.87-276,120.26

Finding the Fourth Proportional to 491,021.71, 677,531.87 and 276,120.26

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Solution

The fourth proportional to 491,021.71, 677,531.87 and 276,120.26 is: 381,002.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,021.71 : 677,531.87 = 276,120.26 : x
  2. Step 2: Convert to fraction form
    491,021.71/677,531.87 = 276,120.26/x
  3. Step 3: Cross multiply
    491,021.71x = 677,531.87 × 276,120.26
  4. Step 4: Simplify right side
    491,021.71x = 187,080,274,722.09
  5. Step 5: Solve for x
    x = 187,080,274,722.09/491,021.71
  6. Step 6: Final answer
    x = 381,002.05

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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.