Home / 512,486,811.39-768,861,305.82-148,981,167.39

Finding the Fourth Proportional to 512,486,811.39, 768,861,305.82 and 148,981,167.39

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Solution

The fourth proportional to 512,486,811.39, 768,861,305.82 and 148,981,167.39 is: 223,509,858.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,486,811.39 : 768,861,305.82 = 148,981,167.39 : x
  2. Step 2: Convert to fraction form
    512,486,811.39/768,861,305.82 = 148,981,167.39/x
  3. Step 3: Cross multiply
    512,486,811.39x = 768,861,305.82 × 148,981,167.39
  4. Step 4: Simplify right side
    512,486,811.39x = 114,545,854,902,063,392
  5. Step 5: Solve for x
    x = 114,545,854,902,063,392/512,486,811.39
  6. Step 6: Final answer
    x = 223,509,858.90

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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.