Home / 500,456.43-690,679.53-285,629.04

Finding the Fourth Proportional to 500,456.43, 690,679.53 and 285,629.04

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Solution

The fourth proportional to 500,456.43, 690,679.53 and 285,629.04 is: 394,196.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,456.43 : 690,679.53 = 285,629.04 : x
  2. Step 2: Convert to fraction form
    500,456.43/690,679.53 = 285,629.04/x
  3. Step 3: Cross multiply
    500,456.43x = 690,679.53 × 285,629.04
  4. Step 4: Simplify right side
    500,456.43x = 197,278,131,101.55
  5. Step 5: Solve for x
    x = 197,278,131,101.55/500,456.43
  6. Step 6: Final answer
    x = 394,196.42

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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.