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Finding the Fourth Proportional to 500,521.27, 690,718.74 and 271,078.41

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Solution

The fourth proportional to 500,521.27, 690,718.74 and 271,078.41 is: 374,087.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,521.27 : 690,718.74 = 271,078.41 : x
  2. Step 2: Convert to fraction form
    500,521.27/690,718.74 = 271,078.41/x
  3. Step 3: Cross multiply
    500,521.27x = 690,718.74 × 271,078.41
  4. Step 4: Simplify right side
    500,521.27x = 187,238,940,894.87
  5. Step 5: Solve for x
    x = 187,238,940,894.87/500,521.27
  6. Step 6: Final answer
    x = 374,087.88

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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.