Home / 500,569.86-690,780.91-271,121.44

Finding the Fourth Proportional to 500,569.86, 690,780.91 and 271,121.44

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Solution

The fourth proportional to 500,569.86, 690,780.91 and 271,121.44 is: 374,144.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,569.86 : 690,780.91 = 271,121.44 : x
  2. Step 2: Convert to fraction form
    500,569.86/690,780.91 = 271,121.44/x
  3. Step 3: Cross multiply
    500,569.86x = 690,780.91 × 271,121.44
  4. Step 4: Simplify right side
    500,569.86x = 187,285,515,043.71
  5. Step 5: Solve for x
    x = 187,285,515,043.71/500,569.86
  6. Step 6: Final answer
    x = 374,144.61

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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.