Home / 426,945.60-639,727.20-268,891.20

Finding the Fourth Proportional to 426,945.60, 639,727.20 and 268,891.20

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Solution

The fourth proportional to 426,945.60, 639,727.20 and 268,891.20 is: 402,901.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,945.60 : 639,727.20 = 268,891.20 : x
  2. Step 2: Convert to fraction form
    426,945.60/639,727.20 = 268,891.20/x
  3. Step 3: Cross multiply
    426,945.60x = 639,727.20 × 268,891.20
  4. Step 4: Simplify right side
    426,945.60x = 172,017,014,480.64
  5. Step 5: Solve for x
    x = 172,017,014,480.64/426,945.60
  6. Step 6: Final answer
    x = 402,901.48

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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.