Home / 639,324,844.12-882,268,286.34-345,969,412.12

Finding the Fourth Proportional to 639,324,844.12, 882,268,286.34 and 345,969,412.12

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Solution

The fourth proportional to 639,324,844.12, 882,268,286.34 and 345,969,412.12 is: 477,437,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,324,844.12 : 882,268,286.34 = 345,969,412.12 : x
  2. Step 2: Convert to fraction form
    639,324,844.12/882,268,286.34 = 345,969,412.12/x
  3. Step 3: Cross multiply
    639,324,844.12x = 882,268,286.34 × 345,969,412.12
  4. Step 4: Simplify right side
    639,324,844.12x = 305,237,840,357,169,664
  5. Step 5: Solve for x
    x = 305,237,840,357,169,664/639,324,844.12
  6. Step 6: Final answer
    x = 477,437,789.51

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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.