Home / 812,531.04-1,121,291.84-449,954.46

Finding the Fourth Proportional to 812,531.04, 1,121,291.84 and 449,954.46

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Solution

The fourth proportional to 812,531.04, 1,121,291.84 and 449,954.46 is: 620,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,531.04 : 1,121,291.84 = 449,954.46 : x
  2. Step 2: Convert to fraction form
    812,531.04/1,121,291.84 = 449,954.46/x
  3. Step 3: Cross multiply
    812,531.04x = 1,121,291.84 × 449,954.46
  4. Step 4: Simplify right side
    812,531.04x = 504,530,262,119.83
  5. Step 5: Solve for x
    x = 504,530,262,119.83/812,531.04
  6. Step 6: Final answer
    x = 620,936.60

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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.