Home / 426,097.28-639,244.35-126,571.23

Finding the Fourth Proportional to 426,097.28, 639,244.35 and 126,571.23

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Solution

The fourth proportional to 426,097.28, 639,244.35 and 126,571.23 is: 189,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,097.28 : 639,244.35 = 126,571.23 : x
  2. Step 2: Convert to fraction form
    426,097.28/639,244.35 = 126,571.23/x
  3. Step 3: Cross multiply
    426,097.28x = 639,244.35 × 126,571.23
  4. Step 4: Simplify right side
    426,097.28x = 80,909,943,650.05
  5. Step 5: Solve for x
    x = 80,909,943,650.05/426,097.28
  6. Step 6: Final answer
    x = 189,886.08

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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.