Home / 491,079.21-677,682.50-276,219.42

Finding the Fourth Proportional to 491,079.21, 677,682.50 and 276,219.42

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Solution

The fourth proportional to 491,079.21, 677,682.50 and 276,219.42 is: 381,178.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,079.21 : 677,682.50 = 276,219.42 : x
  2. Step 2: Convert to fraction form
    491,079.21/677,682.50 = 276,219.42/x
  3. Step 3: Cross multiply
    491,079.21x = 677,682.50 × 276,219.42
  4. Step 4: Simplify right side
    491,079.21x = 187,189,063,171.74
  5. Step 5: Solve for x
    x = 187,189,063,171.74/491,079.21
  6. Step 6: Final answer
    x = 381,178.96

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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.