Home / 811,942.74-1,120,472.73-449,367.30

Finding the Fourth Proportional to 811,942.74, 1,120,472.73 and 449,367.30

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Solution

The fourth proportional to 811,942.74, 1,120,472.73 and 449,367.30 is: 620,122.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,942.74 : 1,120,472.73 = 449,367.30 : x
  2. Step 2: Convert to fraction form
    811,942.74/1,120,472.73 = 449,367.30/x
  3. Step 3: Cross multiply
    811,942.74x = 1,120,472.73 × 449,367.30
  4. Step 4: Simplify right side
    811,942.74x = 503,503,805,403.73
  5. Step 5: Solve for x
    x = 503,503,805,403.73/811,942.74
  6. Step 6: Final answer
    x = 620,122.31

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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.