Home / 861,259.91-1,291,021.41-541,640.19

Finding the Fourth Proportional to 861,259.91, 1,291,021.41 and 541,640.19

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Solution

The fourth proportional to 861,259.91, 1,291,021.41 and 541,640.19 is: 811,914.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,259.91 : 1,291,021.41 = 541,640.19 : x
  2. Step 2: Convert to fraction form
    861,259.91/1,291,021.41 = 541,640.19/x
  3. Step 3: Cross multiply
    861,259.91x = 1,291,021.41 × 541,640.19
  4. Step 4: Simplify right side
    861,259.91x = 699,269,081,806.47
  5. Step 5: Solve for x
    x = 699,269,081,806.47/861,259.91
  6. Step 6: Final answer
    x = 811,914.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.