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Finding the Fourth Proportional to 500,694.33, 690,985.85 and 285,903.39

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Solution

The fourth proportional to 500,694.33, 690,985.85 and 285,903.39 is: 394,562.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,694.33 : 690,985.85 = 285,903.39 : x
  2. Step 2: Convert to fraction form
    500,694.33/690,985.85 = 285,903.39/x
  3. Step 3: Cross multiply
    500,694.33x = 690,985.85 × 285,903.39
  4. Step 4: Simplify right side
    500,694.33x = 197,555,195,527.52
  5. Step 5: Solve for x
    x = 197,555,195,527.52/500,694.33
  6. Step 6: Final answer
    x = 394,562.48

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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.