Home / 643,233.78-964,715.22-414,845.28

Finding the Fourth Proportional to 643,233.78, 964,715.22 and 414,845.28

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Solution

The fourth proportional to 643,233.78, 964,715.22 and 414,845.28 is: 622,180.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,233.78 : 964,715.22 = 414,845.28 : x
  2. Step 2: Convert to fraction form
    643,233.78/964,715.22 = 414,845.28/x
  3. Step 3: Cross multiply
    643,233.78x = 964,715.22 × 414,845.28
  4. Step 4: Simplify right side
    643,233.78x = 400,207,555,561.16
  5. Step 5: Solve for x
    x = 400,207,555,561.16/643,233.78
  6. Step 6: Final answer
    x = 622,180.56

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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.