Home / 491,882.76-678,789.07-268,110.05

Finding the Fourth Proportional to 491,882.76, 678,789.07 and 268,110.05

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Solution

The fourth proportional to 491,882.76, 678,789.07 and 268,110.05 is: 369,986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,882.76 : 678,789.07 = 268,110.05 : x
  2. Step 2: Convert to fraction form
    491,882.76/678,789.07 = 268,110.05/x
  3. Step 3: Cross multiply
    491,882.76x = 678,789.07 × 268,110.05
  4. Step 4: Simplify right side
    491,882.76x = 181,990,167,432.93
  5. Step 5: Solve for x
    x = 181,990,167,432.93/491,882.76
  6. Step 6: Final answer
    x = 369,986.88

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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.