Home / 491,789.88-678,663.36-276,932.52

Finding the Fourth Proportional to 491,789.88, 678,663.36 and 276,932.52

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Solution

The fourth proportional to 491,789.88, 678,663.36 and 276,932.52 is: 382,163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,789.88 : 678,663.36 = 276,932.52 : x
  2. Step 2: Convert to fraction form
    491,789.88/678,663.36 = 276,932.52/x
  3. Step 3: Cross multiply
    491,789.88x = 678,663.36 × 276,932.52
  4. Step 4: Simplify right side
    491,789.88x = 187,943,954,516.47
  5. Step 5: Solve for x
    x = 187,943,954,516.47/491,789.88
  6. Step 6: Final answer
    x = 382,163.12

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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.