Home / 812,108.86-1,120,696.66-449,524.94

Finding the Fourth Proportional to 812,108.86, 1,120,696.66 and 449,524.94

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Solution

The fourth proportional to 812,108.86, 1,120,696.66 and 449,524.94 is: 620,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,108.86 : 1,120,696.66 = 449,524.94 : x
  2. Step 2: Convert to fraction form
    812,108.86/1,120,696.66 = 449,524.94/x
  3. Step 3: Cross multiply
    812,108.86x = 1,120,696.66 × 449,524.94
  4. Step 4: Simplify right side
    812,108.86x = 503,781,100,107.04
  5. Step 5: Solve for x
    x = 503,781,100,107.04/812,108.86
  6. Step 6: Final answer
    x = 620,336.91

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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.