Home / 861,564.78-1,189,070.82-494,185.26

Finding the Fourth Proportional to 861,564.78, 1,189,070.82 and 494,185.26

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Solution

The fourth proportional to 861,564.78, 1,189,070.82 and 494,185.26 is: 682,039.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,564.78 : 1,189,070.82 = 494,185.26 : x
  2. Step 2: Convert to fraction form
    861,564.78/1,189,070.82 = 494,185.26/x
  3. Step 3: Cross multiply
    861,564.78x = 1,189,070.82 × 494,185.26
  4. Step 4: Simplify right side
    861,564.78x = 587,621,272,340.11
  5. Step 5: Solve for x
    x = 587,621,272,340.11/861,564.78
  6. Step 6: Final answer
    x = 682,039.57

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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.