Home / 1,040,640.17-1,561,128.68-320,813.57

Finding the Fourth Proportional to 1,040,640.17, 1,561,128.68 and 320,813.57

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Solution

The fourth proportional to 1,040,640.17, 1,561,128.68 and 320,813.57 is: 481,272.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,640.17 : 1,561,128.68 = 320,813.57 : x
  2. Step 2: Convert to fraction form
    1,040,640.17/1,561,128.68 = 320,813.57/x
  3. Step 3: Cross multiply
    1,040,640.17x = 1,561,128.68 × 320,813.57
  4. Step 4: Simplify right side
    1,040,640.17x = 500,831,259,179.12
  5. Step 5: Solve for x
    x = 500,831,259,179.12/1,040,640.17
  6. Step 6: Final answer
    x = 481,272.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.