Home / 1,381,128.86-1,906,053.51-837,287.57

Finding the Fourth Proportional to 1,381,128.86, 1,906,053.51 and 837,287.57

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Solution

The fourth proportional to 1,381,128.86, 1,906,053.51 and 837,287.57 is: 1,155,514.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,128.86 : 1,906,053.51 = 837,287.57 : x
  2. Step 2: Convert to fraction form
    1,381,128.86/1,906,053.51 = 837,287.57/x
  3. Step 3: Cross multiply
    1,381,128.86x = 1,906,053.51 × 837,287.57
  4. Step 4: Simplify right side
    1,381,128.86x = 1,595,914,902,147.60
  5. Step 5: Solve for x
    x = 1,595,914,902,147.60/1,381,128.86
  6. Step 6: Final answer
    x = 1,155,514.85

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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.