Home / 500,436.82-690,652.20-285,609.02

Finding the Fourth Proportional to 500,436.82, 690,652.20 and 285,609.02

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Solution

The fourth proportional to 500,436.82, 690,652.20 and 285,609.02 is: 394,168.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,436.82 : 690,652.20 = 285,609.02 : x
  2. Step 2: Convert to fraction form
    500,436.82/690,652.20 = 285,609.02/x
  3. Step 3: Cross multiply
    500,436.82x = 690,652.20 × 285,609.02
  4. Step 4: Simplify right side
    500,436.82x = 197,256,498,002.84
  5. Step 5: Solve for x
    x = 197,256,498,002.84/500,436.82
  6. Step 6: Final answer
    x = 394,168.64

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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.