Home / 431,126,396.72-646,680,257.96-120,225,716.90

Finding the Fourth Proportional to 431,126,396.72, 646,680,257.96 and 120,225,716.90

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Solution

The fourth proportional to 431,126,396.72, 646,680,257.96 and 120,225,716.90 is: 180,335,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,126,396.72 : 646,680,257.96 = 120,225,716.90 : x
  2. Step 2: Convert to fraction form
    431,126,396.72/646,680,257.96 = 120,225,716.90/x
  3. Step 3: Cross multiply
    431,126,396.72x = 646,680,257.96 × 120,225,716.90
  4. Step 4: Simplify right side
    431,126,396.72x = 77,747,597,618,317,936
  5. Step 5: Solve for x
    x = 77,747,597,618,317,936/431,126,396.72
  6. Step 6: Final answer
    x = 180,335,971.56

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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.