Home / 1,291,145.94-1,781,755.17-718,173.78

Finding the Fourth Proportional to 1,291,145.94, 1,781,755.17 and 718,173.78

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Solution

The fourth proportional to 1,291,145.94, 1,781,755.17 and 718,173.78 is: 991,065.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,145.94 : 1,781,755.17 = 718,173.78 : x
  2. Step 2: Convert to fraction form
    1,291,145.94/1,781,755.17 = 718,173.78/x
  3. Step 3: Cross multiply
    1,291,145.94x = 1,781,755.17 × 718,173.78
  4. Step 4: Simplify right side
    1,291,145.94x = 1,279,609,845,473.44
  5. Step 5: Solve for x
    x = 1,279,609,845,473.44/1,291,145.94
  6. Step 6: Final answer
    x = 991,065.23

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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.