Home / 872,895,629.20-1,309,515,930.08-320,203,190.56

Finding the Fourth Proportional to 872,895,629.20, 1,309,515,930.08 and 320,203,190.56

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Solution

The fourth proportional to 872,895,629.20, 1,309,515,930.08 and 320,203,190.56 is: 480,368,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,895,629.20 : 1,309,515,930.08 = 320,203,190.56 : x
  2. Step 2: Convert to fraction form
    872,895,629.20/1,309,515,930.08 = 320,203,190.56/x
  3. Step 3: Cross multiply
    872,895,629.20x = 1,309,515,930.08 × 320,203,190.56
  4. Step 4: Simplify right side
    872,895,629.20x = 419,311,178,900,761,856
  5. Step 5: Solve for x
    x = 419,311,178,900,761,856/872,895,629.20
  6. Step 6: Final answer
    x = 480,368,058.76

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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.