Home / 1,392,672.23-1,921,791.46-772,418.87

Finding the Fourth Proportional to 1,392,672.23, 1,921,791.46 and 772,418.87

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Solution

The fourth proportional to 1,392,672.23, 1,921,791.46 and 772,418.87 is: 1,065,884.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,672.23 : 1,921,791.46 = 772,418.87 : x
  2. Step 2: Convert to fraction form
    1,392,672.23/1,921,791.46 = 772,418.87/x
  3. Step 3: Cross multiply
    1,392,672.23x = 1,921,791.46 × 772,418.87
  4. Step 4: Simplify right side
    1,392,672.23x = 1,484,427,987,908.85
  5. Step 5: Solve for x
    x = 1,484,427,987,908.85/1,392,672.23
  6. Step 6: Final answer
    x = 1,065,884.68

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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.