Home / 409,502,757.09-613,279,103.23-261,491,856.15

Finding the Fourth Proportional to 409,502,757.09, 613,279,103.23 and 261,491,856.15

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Solution

The fourth proportional to 409,502,757.09, 613,279,103.23 and 261,491,856.15 is: 391,615,168.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,502,757.09 : 613,279,103.23 = 261,491,856.15 : x
  2. Step 2: Convert to fraction form
    409,502,757.09/613,279,103.23 = 261,491,856.15/x
  3. Step 3: Cross multiply
    409,502,757.09x = 613,279,103.23 × 261,491,856.15
  4. Step 4: Simplify right side
    409,502,757.09x = 160,367,491,038,342,112
  5. Step 5: Solve for x
    x = 160,367,491,038,342,112/409,502,757.09
  6. Step 6: Final answer
    x = 391,615,168.06

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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.