Home / 426,098.28-639,245.85-126,572.23

Finding the Fourth Proportional to 426,098.28, 639,245.85 and 126,572.23

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Solution

The fourth proportional to 426,098.28, 639,245.85 and 126,572.23 is: 189,887.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,098.28 : 639,245.85 = 126,572.23 : x
  2. Step 2: Convert to fraction form
    426,098.28/639,245.85 = 126,572.23/x
  3. Step 3: Cross multiply
    426,098.28x = 639,245.85 × 126,572.23
  4. Step 4: Simplify right side
    426,098.28x = 80,910,772,752.75
  5. Step 5: Solve for x
    x = 80,910,772,752.75/426,098.28
  6. Step 6: Final answer
    x = 189,887.58

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1.5x scale

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.