Home / 491,105.96-677,786.18-276,255.08

Finding the Fourth Proportional to 491,105.96, 677,786.18 and 276,255.08

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Solution

The fourth proportional to 491,105.96, 677,786.18 and 276,255.08 is: 381,265.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,105.96 : 677,786.18 = 276,255.08 : x
  2. Step 2: Convert to fraction form
    491,105.96/677,786.18 = 276,255.08/x
  3. Step 3: Cross multiply
    491,105.96x = 677,786.18 × 276,255.08
  4. Step 4: Simplify right side
    491,105.96x = 187,241,875,378.79
  5. Step 5: Solve for x
    x = 187,241,875,378.79/491,105.96
  6. Step 6: Final answer
    x = 381,265.74

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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.