Home / 812,183.09-1,120,821.53-449,613

Finding the Fourth Proportional to 812,183.09, 1,120,821.53 and 449,613

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Solution

The fourth proportional to 812,183.09, 1,120,821.53 and 449,613 is: 620,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,183.09 : 1,120,821.53 = 449,613 : x
  2. Step 2: Convert to fraction form
    812,183.09/1,120,821.53 = 449,613/x
  3. Step 3: Cross multiply
    812,183.09x = 1,120,821.53 × 449,613
  4. Step 4: Simplify right side
    812,183.09x = 503,935,928,319.83
  5. Step 5: Solve for x
    x = 503,935,928,319.83/812,183.09
  6. Step 6: Final answer
    x = 620,470.85

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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.