Home / 812,457.96-1,121,178.26-449,874.04

Finding the Fourth Proportional to 812,457.96, 1,121,178.26 and 449,874.04

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Solution

The fourth proportional to 812,457.96, 1,121,178.26 and 449,874.04 is: 620,818.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,457.96 : 1,121,178.26 = 449,874.04 : x
  2. Step 2: Convert to fraction form
    812,457.96/1,121,178.26 = 449,874.04/x
  3. Step 3: Cross multiply
    812,457.96x = 1,121,178.26 × 449,874.04
  4. Step 4: Simplify right side
    812,457.96x = 504,388,993,386.37
  5. Step 5: Solve for x
    x = 504,388,993,386.37/812,457.96
  6. Step 6: Final answer
    x = 620,818.58

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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.