Home / 1,188,874.35-1,783,446.84-431,072.73

Finding the Fourth Proportional to 1,188,874.35, 1,783,446.84 and 431,072.73

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Solution

The fourth proportional to 1,188,874.35, 1,783,446.84 and 431,072.73 is: 646,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,874.35 : 1,783,446.84 = 431,072.73 : x
  2. Step 2: Convert to fraction form
    1,188,874.35/1,783,446.84 = 431,072.73/x
  3. Step 3: Cross multiply
    1,188,874.35x = 1,783,446.84 × 431,072.73
  4. Step 4: Simplify right side
    1,188,874.35x = 768,795,298,128.67
  5. Step 5: Solve for x
    x = 768,795,298,128.67/1,188,874.35
  6. Step 6: Final answer
    x = 646,658.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.