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Finding the Fourth Proportional to 609,629.26, 910,736.04 and 394,645.78

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Solution

The fourth proportional to 609,629.26, 910,736.04 and 394,645.78 is: 589,568.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,629.26 : 910,736.04 = 394,645.78 : x
  2. Step 2: Convert to fraction form
    609,629.26/910,736.04 = 394,645.78/x
  3. Step 3: Cross multiply
    609,629.26x = 910,736.04 × 394,645.78
  4. Step 4: Simplify right side
    609,629.26x = 359,418,134,879.91
  5. Step 5: Solve for x
    x = 359,418,134,879.91/609,629.26
  6. Step 6: Final answer
    x = 589,568.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.