Home / 1,188,531.26-1,640,161.07-644,655.37

Finding the Fourth Proportional to 1,188,531.26, 1,640,161.07 and 644,655.37

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Solution

The fourth proportional to 1,188,531.26, 1,640,161.07 and 644,655.37 is: 889,617.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,531.26 : 1,640,161.07 = 644,655.37 : x
  2. Step 2: Convert to fraction form
    1,188,531.26/1,640,161.07 = 644,655.37/x
  3. Step 3: Cross multiply
    1,188,531.26x = 1,640,161.07 × 644,655.37
  4. Step 4: Simplify right side
    1,188,531.26x = 1,057,338,641,440.45
  5. Step 5: Solve for x
    x = 1,057,338,641,440.45/1,188,531.26
  6. Step 6: Final answer
    x = 889,617.86

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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.