Home / 509,969,309.40-764,953,964.10-165,170,388.60

Finding the Fourth Proportional to 509,969,309.40, 764,953,964.10 and 165,170,388.60

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Solution

The fourth proportional to 509,969,309.40, 764,953,964.10 and 165,170,388.60 is: 247,755,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,969,309.40 : 764,953,964.10 = 165,170,388.60 : x
  2. Step 2: Convert to fraction form
    509,969,309.40/764,953,964.10 = 165,170,388.60/x
  3. Step 3: Cross multiply
    509,969,309.40x = 764,953,964.10 × 165,170,388.60
  4. Step 4: Simplify right side
    509,969,309.40x = 126,347,743,511,507,456
  5. Step 5: Solve for x
    x = 126,347,743,511,507,456/509,969,309.40
  6. Step 6: Final answer
    x = 247,755,582.90

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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.