Home / 512,486,823.78-768,861,324.36-148,981,179.78

Finding the Fourth Proportional to 512,486,823.78, 768,861,324.36 and 148,981,179.78

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Solution

The fourth proportional to 512,486,823.78, 768,861,324.36 and 148,981,179.78 is: 223,509,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,486,823.78 : 768,861,324.36 = 148,981,179.78 : x
  2. Step 2: Convert to fraction form
    512,486,823.78/768,861,324.36 = 148,981,179.78/x
  3. Step 3: Cross multiply
    512,486,823.78x = 768,861,324.36 × 148,981,179.78
  4. Step 4: Simplify right side
    512,486,823.78x = 114,545,867,190,366,064
  5. Step 5: Solve for x
    x = 114,545,867,190,366,064/512,486,823.78
  6. Step 6: Final answer
    x = 223,509,877.47

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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.