Home / 426,251.14-639,481.94-126,730.42

Finding the Fourth Proportional to 426,251.14, 639,481.94 and 126,730.42

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Solution

The fourth proportional to 426,251.14, 639,481.94 and 126,730.42 is: 190,126.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,251.14 : 639,481.94 = 126,730.42 : x
  2. Step 2: Convert to fraction form
    426,251.14/639,481.94 = 126,730.42/x
  3. Step 3: Cross multiply
    426,251.14x = 639,481.94 × 126,730.42
  4. Step 4: Simplify right side
    426,251.14x = 81,041,814,838.61
  5. Step 5: Solve for x
    x = 81,041,814,838.61/426,251.14
  6. Step 6: Final answer
    x = 190,126.92

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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.