Home / 1,211,859.31-1,672,440.67-667,993.88

Finding the Fourth Proportional to 1,211,859.31, 1,672,440.67 and 667,993.88

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Solution

The fourth proportional to 1,211,859.31, 1,672,440.67 and 667,993.88 is: 921,872.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,859.31 : 1,672,440.67 = 667,993.88 : x
  2. Step 2: Convert to fraction form
    1,211,859.31/1,672,440.67 = 667,993.88/x
  3. Step 3: Cross multiply
    1,211,859.31x = 1,672,440.67 × 667,993.88
  4. Step 4: Simplify right side
    1,211,859.31x = 1,117,180,125,530.88
  5. Step 5: Solve for x
    x = 1,117,180,125,530.88/1,211,859.31
  6. Step 6: Final answer
    x = 921,872.79

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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.