Home / 426,114.20-639,171.30-268,520.60

Finding the Fourth Proportional to 426,114.20, 639,171.30 and 268,520.60

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Solution

The fourth proportional to 426,114.20, 639,171.30 and 268,520.60 is: 402,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,114.20 : 639,171.30 = 268,520.60 : x
  2. Step 2: Convert to fraction form
    426,114.20/639,171.30 = 268,520.60/x
  3. Step 3: Cross multiply
    426,114.20x = 639,171.30 × 268,520.60
  4. Step 4: Simplify right side
    426,114.20x = 171,630,660,978.78
  5. Step 5: Solve for x
    x = 171,630,660,978.78/426,114.20
  6. Step 6: Final answer
    x = 402,780.90

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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.