Home / 812,484.42-1,121,214.70-449,900.49

Finding the Fourth Proportional to 812,484.42, 1,121,214.70 and 449,900.49

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Solution

The fourth proportional to 812,484.42, 1,121,214.70 and 449,900.49 is: 620,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,484.42 : 1,121,214.70 = 449,900.49 : x
  2. Step 2: Convert to fraction form
    812,484.42/1,121,214.70 = 449,900.49/x
  3. Step 3: Cross multiply
    812,484.42x = 1,121,214.70 × 449,900.49
  4. Step 4: Simplify right side
    812,484.42x = 504,435,042,645.68
  5. Step 5: Solve for x
    x = 504,435,042,645.68/812,484.42
  6. Step 6: Final answer
    x = 620,855.04

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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.