Home / 7,231,171.23-9,978,988.86-3,968,040.56

Finding the Fourth Proportional to 7,231,171.23, 9,978,988.86 and 3,968,040.56

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Solution

The fourth proportional to 7,231,171.23, 9,978,988.86 and 3,968,040.56 is: 5,475,880.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,231,171.23 : 9,978,988.86 = 3,968,040.56 : x
  2. Step 2: Convert to fraction form
    7,231,171.23/9,978,988.86 = 3,968,040.56/x
  3. Step 3: Cross multiply
    7,231,171.23x = 9,978,988.86 × 3,968,040.56
  4. Step 4: Simplify right side
    7,231,171.23x = 39,597,032,494,373.22
  5. Step 5: Solve for x
    x = 39,597,032,494,373.22/7,231,171.23
  6. Step 6: Final answer
    x = 5,475,880.91

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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.