Home / 426,126.20-639,189.30-268,532.60

Finding the Fourth Proportional to 426,126.20, 639,189.30 and 268,532.60

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Solution

The fourth proportional to 426,126.20, 639,189.30 and 268,532.60 is: 402,798.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,126.20 : 639,189.30 = 268,532.60 : x
  2. Step 2: Convert to fraction form
    426,126.20/639,189.30 = 268,532.60/x
  3. Step 3: Cross multiply
    426,126.20x = 639,189.30 × 268,532.60
  4. Step 4: Simplify right side
    426,126.20x = 171,643,164,621.18
  5. Step 5: Solve for x
    x = 171,643,164,621.18/426,126.20
  6. Step 6: Final answer
    x = 402,798.90

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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.