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Finding the Fourth Proportional to 800,797.74, 1,105,100.94 and 438,221.58

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Solution

The fourth proportional to 800,797.74, 1,105,100.94 and 438,221.58 is: 604,745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,797.74 : 1,105,100.94 = 438,221.58 : x
  2. Step 2: Convert to fraction form
    800,797.74/1,105,100.94 = 438,221.58/x
  3. Step 3: Cross multiply
    800,797.74x = 1,105,100.94 × 438,221.58
  4. Step 4: Simplify right side
    800,797.74x = 484,279,079,986.29
  5. Step 5: Solve for x
    x = 484,279,079,986.29/800,797.74
  6. Step 6: Final answer
    x = 604,745.81

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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.