Home / 579,313,105.60-868,969,658.40-142,610,321.20

Finding the Fourth Proportional to 579,313,105.60, 868,969,658.40 and 142,610,321.20

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Solution

The fourth proportional to 579,313,105.60, 868,969,658.40 and 142,610,321.20 is: 213,915,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,313,105.60 : 868,969,658.40 = 142,610,321.20 : x
  2. Step 2: Convert to fraction form
    579,313,105.60/868,969,658.40 = 142,610,321.20/x
  3. Step 3: Cross multiply
    579,313,105.60x = 868,969,658.40 × 142,610,321.20
  4. Step 4: Simplify right side
    579,313,105.60x = 123,924,042,097,478,272
  5. Step 5: Solve for x
    x = 123,924,042,097,478,272/579,313,105.60
  6. Step 6: Final answer
    x = 213,915,481.80

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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.