Home / 409,502,763.11-613,279,112.22-261,491,862.15

Finding the Fourth Proportional to 409,502,763.11, 613,279,112.22 and 261,491,862.15

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Solution

The fourth proportional to 409,502,763.11, 613,279,112.22 and 261,491,862.15 is: 391,615,177.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,502,763.11 : 613,279,112.22 = 261,491,862.15 : x
  2. Step 2: Convert to fraction form
    409,502,763.11/613,279,112.22 = 261,491,862.15/x
  3. Step 3: Cross multiply
    409,502,763.11x = 613,279,112.22 × 261,491,862.15
  4. Step 4: Simplify right side
    409,502,763.11x = 160,367,497,072,106,624
  5. Step 5: Solve for x
    x = 160,367,497,072,106,624/409,502,763.11
  6. Step 6: Final answer
    x = 391,615,177.04

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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.