Home / 750,105.11-1,035,143.19-405,939.75

Finding the Fourth Proportional to 750,105.11, 1,035,143.19 and 405,939.75

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Solution

The fourth proportional to 750,105.11, 1,035,143.19 and 405,939.75 is: 560,195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,105.11 : 1,035,143.19 = 405,939.75 : x
  2. Step 2: Convert to fraction form
    750,105.11/1,035,143.19 = 405,939.75/x
  3. Step 3: Cross multiply
    750,105.11x = 1,035,143.19 × 405,939.75
  4. Step 4: Simplify right side
    750,105.11x = 420,205,767,762.80
  5. Step 5: Solve for x
    x = 420,205,767,762.80/750,105.11
  6. Step 6: Final answer
    x = 560,195.85

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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.