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Finding the Fourth Proportional to 663,103.97, 915,083.53 and 361,297.97

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Solution

The fourth proportional to 663,103.97, 915,083.53 and 361,297.97 is: 498,591.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,103.97 : 915,083.53 = 361,297.97 : x
  2. Step 2: Convert to fraction form
    663,103.97/915,083.53 = 361,297.97/x
  3. Step 3: Cross multiply
    663,103.97x = 915,083.53 × 361,297.97
  4. Step 4: Simplify right side
    663,103.97x = 330,617,819,722.34
  5. Step 5: Solve for x
    x = 330,617,819,722.34/663,103.97
  6. Step 6: Final answer
    x = 498,591.22

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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.