Home / 491,245.10-677,911.29-276,384.65

Finding the Fourth Proportional to 491,245.10, 677,911.29 and 276,384.65

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Solution

The fourth proportional to 491,245.10, 677,911.29 and 276,384.65 is: 381,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,245.10 : 677,911.29 = 276,384.65 : x
  2. Step 2: Convert to fraction form
    491,245.10/677,911.29 = 276,384.65/x
  3. Step 3: Cross multiply
    491,245.10x = 677,911.29 × 276,384.65
  4. Step 4: Simplify right side
    491,245.10x = 187,364,274,617.70
  5. Step 5: Solve for x
    x = 187,364,274,617.70/491,245.10
  6. Step 6: Final answer
    x = 381,406.91

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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.