Home / 426,371.04-639,445.20-126,770.96

Finding the Fourth Proportional to 426,371.04, 639,445.20 and 126,770.96

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Solution

The fourth proportional to 426,371.04, 639,445.20 and 126,770.96 is: 190,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,371.04 : 639,445.20 = 126,770.96 : x
  2. Step 2: Convert to fraction form
    426,371.04/639,445.20 = 126,770.96/x
  3. Step 3: Cross multiply
    426,371.04x = 639,445.20 × 126,770.96
  4. Step 4: Simplify right side
    426,371.04x = 81,063,081,871.39
  5. Step 5: Solve for x
    x = 81,063,081,871.39/426,371.04
  6. Step 6: Final answer
    x = 190,123.33

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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.