Home / 812,114.49-1,120,704.42-449,530.58

Finding the Fourth Proportional to 812,114.49, 1,120,704.42 and 449,530.58

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Solution

The fourth proportional to 812,114.49, 1,120,704.42 and 449,530.58 is: 620,344.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,114.49 : 1,120,704.42 = 449,530.58 : x
  2. Step 2: Convert to fraction form
    812,114.49/1,120,704.42 = 449,530.58/x
  3. Step 3: Cross multiply
    812,114.49x = 1,120,704.42 × 449,530.58
  4. Step 4: Simplify right side
    812,114.49x = 503,790,902,327.64
  5. Step 5: Solve for x
    x = 503,790,902,327.64/812,114.49
  6. Step 6: Final answer
    x = 620,344.68

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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.