Home / 426,014.40-639,154.19-126,496.54

Finding the Fourth Proportional to 426,014.40, 639,154.19 and 126,496.54

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Solution

The fourth proportional to 426,014.40, 639,154.19 and 126,496.54 is: 189,784.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,014.40 : 639,154.19 = 126,496.54 : x
  2. Step 2: Convert to fraction form
    426,014.40/639,154.19 = 126,496.54/x
  3. Step 3: Cross multiply
    426,014.40x = 639,154.19 × 126,496.54
  4. Step 4: Simplify right side
    426,014.40x = 80,850,793,561.50
  5. Step 5: Solve for x
    x = 80,850,793,561.50/426,014.40
  6. Step 6: Final answer
    x = 189,784.18

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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.