Home / 812,361.09-1,121,093.31-449,784.93

Finding the Fourth Proportional to 812,361.09, 1,121,093.31 and 449,784.93

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Solution

The fourth proportional to 812,361.09, 1,121,093.31 and 449,784.93 is: 620,722.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,361.09 : 1,121,093.31 = 449,784.93 : x
  2. Step 2: Convert to fraction form
    812,361.09/1,121,093.31 = 449,784.93/x
  3. Step 3: Cross multiply
    812,361.09x = 1,121,093.31 × 449,784.93
  4. Step 4: Simplify right side
    812,361.09x = 504,250,871,751.40
  5. Step 5: Solve for x
    x = 504,250,871,751.40/812,361.09
  6. Step 6: Final answer
    x = 620,722.58

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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.