Home / 639,324,849.92-882,268,296-345,969,420.80

Finding the Fourth Proportional to 639,324,849.92, 882,268,296 and 345,969,420.80

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Solution

The fourth proportional to 639,324,849.92, 882,268,296 and 345,969,420.80 is: 477,437,802.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,324,849.92 : 882,268,296 = 345,969,420.80 : x
  2. Step 2: Convert to fraction form
    639,324,849.92/882,268,296 = 345,969,420.80/x
  3. Step 3: Cross multiply
    639,324,849.92x = 882,268,296 × 345,969,420.80
  4. Step 4: Simplify right side
    639,324,849.92x = 305,237,851,357,322,944
  5. Step 5: Solve for x
    x = 305,237,851,357,322,944/639,324,849.92
  6. Step 6: Final answer
    x = 477,437,802.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.