Home / 427,578.36-641,553.56-268,019.93

Finding the Fourth Proportional to 427,578.36, 641,553.56 and 268,019.93

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Solution

The fourth proportional to 427,578.36, 641,553.56 and 268,019.93 is: 402,146.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,578.36 : 641,553.56 = 268,019.93 : x
  2. Step 2: Convert to fraction form
    427,578.36/641,553.56 = 268,019.93/x
  3. Step 3: Cross multiply
    427,578.36x = 641,553.56 × 268,019.93
  4. Step 4: Simplify right side
    427,578.36x = 171,949,135,694.58
  5. Step 5: Solve for x
    x = 171,949,135,694.58/427,578.36
  6. Step 6: Final answer
    x = 402,146.49

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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.