Home / 491,422.07-678,050.29-276,483.71

Finding the Fourth Proportional to 491,422.07, 678,050.29 and 276,483.71

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Solution

The fourth proportional to 491,422.07, 678,050.29 and 276,483.71 is: 381,484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,422.07 : 678,050.29 = 276,483.71 : x
  2. Step 2: Convert to fraction form
    491,422.07/678,050.29 = 276,483.71/x
  3. Step 3: Cross multiply
    491,422.07x = 678,050.29 × 276,483.71
  4. Step 4: Simplify right side
    491,422.07x = 187,469,861,786.51
  5. Step 5: Solve for x
    x = 187,469,861,786.51/491,422.07
  6. Step 6: Final answer
    x = 381,484.41

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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.