Home / 1,382,279.88-1,907,555.09-770,471.43

Finding the Fourth Proportional to 1,382,279.88, 1,907,555.09 and 770,471.43

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Solution

The fourth proportional to 1,382,279.88, 1,907,555.09 and 770,471.43 is: 1,063,255.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,279.88 : 1,907,555.09 = 770,471.43 : x
  2. Step 2: Convert to fraction form
    1,382,279.88/1,907,555.09 = 770,471.43/x
  3. Step 3: Cross multiply
    1,382,279.88x = 1,907,555.09 × 770,471.43
  4. Step 4: Simplify right side
    1,382,279.88x = 1,469,716,703,240.53
  5. Step 5: Solve for x
    x = 1,469,716,703,240.53/1,382,279.88
  6. Step 6: Final answer
    x = 1,063,255.51

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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.