Home / 426,112.20-639,168.30-268,518.60

Finding the Fourth Proportional to 426,112.20, 639,168.30 and 268,518.60

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Solution

The fourth proportional to 426,112.20, 639,168.30 and 268,518.60 is: 402,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,112.20 : 639,168.30 = 268,518.60 : x
  2. Step 2: Convert to fraction form
    426,112.20/639,168.30 = 268,518.60/x
  3. Step 3: Cross multiply
    426,112.20x = 639,168.30 × 268,518.60
  4. Step 4: Simplify right side
    426,112.20x = 171,628,577,080.38
  5. Step 5: Solve for x
    x = 171,628,577,080.38/426,112.20
  6. Step 6: Final answer
    x = 402,777.90

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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.