Home / 3,969,642.21-5,478,200.64-2,227,440.51

Finding the Fourth Proportional to 3,969,642.21, 5,478,200.64 and 2,227,440.51

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Solution

The fourth proportional to 3,969,642.21, 5,478,200.64 and 2,227,440.51 is: 3,073,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,642.21 : 5,478,200.64 = 2,227,440.51 : x
  2. Step 2: Convert to fraction form
    3,969,642.21/5,478,200.64 = 2,227,440.51/x
  3. Step 3: Cross multiply
    3,969,642.21x = 5,478,200.64 × 2,227,440.51
  4. Step 4: Simplify right side
    3,969,642.21x = 12,202,366,035,796.83
  5. Step 5: Solve for x
    x = 12,202,366,035,796.83/3,969,642.21
  6. Step 6: Final answer
    x = 3,073,920.87

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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.