Home / 7,984,205.20-11,978,057.40-3,942,629.20

Finding the Fourth Proportional to 7,984,205.20, 11,978,057.40 and 3,942,629.20

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Solution

The fourth proportional to 7,984,205.20, 11,978,057.40 and 3,942,629.20 is: 5,914,807.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,984,205.20 : 11,978,057.40 = 3,942,629.20 : x
  2. Step 2: Convert to fraction form
    7,984,205.20/11,978,057.40 = 3,942,629.20/x
  3. Step 3: Cross multiply
    7,984,205.20x = 11,978,057.40 × 3,942,629.20
  4. Step 4: Simplify right side
    7,984,205.20x = 47,225,038,864,516.09
  5. Step 5: Solve for x
    x = 47,225,038,864,516.09/7,984,205.20
  6. Step 6: Final answer
    x = 5,914,807.76

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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.