Home / 426,394.08-639,479.68-126,794.04

Finding the Fourth Proportional to 426,394.08, 639,479.68 and 126,794.04

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Solution

The fourth proportional to 426,394.08, 639,479.68 and 126,794.04 is: 190,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,394.08 : 639,479.68 = 126,794.04 : x
  2. Step 2: Convert to fraction form
    426,394.08/639,479.68 = 126,794.04/x
  3. Step 3: Cross multiply
    426,394.08x = 639,479.68 × 126,794.04
  4. Step 4: Simplify right side
    426,394.08x = 81,082,212,125.11
  5. Step 5: Solve for x
    x = 81,082,212,125.11/426,394.08
  6. Step 6: Final answer
    x = 190,157.92

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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.