Home / 491,469.27-678,249.41-276,623.25

Finding the Fourth Proportional to 491,469.27, 678,249.41 and 276,623.25

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Solution

The fourth proportional to 491,469.27, 678,249.41 and 276,623.25 is: 381,752.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,469.27 : 678,249.41 = 276,623.25 : x
  2. Step 2: Convert to fraction form
    491,469.27/678,249.41 = 276,623.25/x
  3. Step 3: Cross multiply
    491,469.27x = 678,249.41 × 276,623.25
  4. Step 4: Simplify right side
    491,469.27x = 187,619,556,104.78
  5. Step 5: Solve for x
    x = 187,619,556,104.78/491,469.27
  6. Step 6: Final answer
    x = 381,752.36

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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.