Home / 426,339.19-639,508.82-126,824.07

Finding the Fourth Proportional to 426,339.19, 639,508.82 and 126,824.07

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Solution

The fourth proportional to 426,339.19, 639,508.82 and 126,824.07 is: 190,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,339.19 : 639,508.82 = 126,824.07 : x
  2. Step 2: Convert to fraction form
    426,339.19/639,508.82 = 126,824.07/x
  3. Step 3: Cross multiply
    426,339.19x = 639,508.82 × 126,824.07
  4. Step 4: Simplify right side
    426,339.19x = 81,105,111,353.30
  5. Step 5: Solve for x
    x = 81,105,111,353.30/426,339.19
  6. Step 6: Final answer
    x = 190,236.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.