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Finding the Fourth Proportional to 500,456.82, 690,630.78 and 271,015.92

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Solution

The fourth proportional to 500,456.82, 690,630.78 and 271,015.92 is: 374,002.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,456.82 : 690,630.78 = 271,015.92 : x
  2. Step 2: Convert to fraction form
    500,456.82/690,630.78 = 271,015.92/x
  3. Step 3: Cross multiply
    500,456.82x = 690,630.78 × 271,015.92
  4. Step 4: Simplify right side
    500,456.82x = 187,171,936,222.02
  5. Step 5: Solve for x
    x = 187,171,936,222.02/500,456.82
  6. Step 6: Final answer
    x = 374,002.17

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1.5x scale

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.