Home / 491,480.20-678,264.42-276,634.12

Finding the Fourth Proportional to 491,480.20, 678,264.42 and 276,634.12

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Solution

The fourth proportional to 491,480.20, 678,264.42 and 276,634.12 is: 381,767.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,480.20 : 678,264.42 = 276,634.12 : x
  2. Step 2: Convert to fraction form
    491,480.20/678,264.42 = 276,634.12/x
  3. Step 3: Cross multiply
    491,480.20x = 678,264.42 × 276,634.12
  4. Step 4: Simplify right side
    491,480.20x = 187,631,080,954.01
  5. Step 5: Solve for x
    x = 187,631,080,954.01/491,480.20
  6. Step 6: Final answer
    x = 381,767.32

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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.