Home / 7,241,021.28-9,992,615.92-3,978,047.36

Finding the Fourth Proportional to 7,241,021.28, 9,992,615.92 and 3,978,047.36

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Solution

The fourth proportional to 7,241,021.28, 9,992,615.92 and 3,978,047.36 is: 5,489,708.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,241,021.28 : 9,992,615.92 = 3,978,047.36 : x
  2. Step 2: Convert to fraction form
    7,241,021.28/9,992,615.92 = 3,978,047.36/x
  3. Step 3: Cross multiply
    7,241,021.28x = 9,992,615.92 × 3,978,047.36
  4. Step 4: Simplify right side
    7,241,021.28x = 39,751,099,380,049.97
  5. Step 5: Solve for x
    x = 39,751,099,380,049.97/7,241,021.28
  6. Step 6: Final answer
    x = 5,489,708.96

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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.