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Finding the Fourth Proportional to 663,322.41, 915,410.30 and 361,516.41

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Solution

The fourth proportional to 663,322.41, 915,410.30 and 361,516.41 is: 498,906.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,322.41 : 915,410.30 = 361,516.41 : x
  2. Step 2: Convert to fraction form
    663,322.41/915,410.30 = 361,516.41/x
  3. Step 3: Cross multiply
    663,322.41x = 915,410.30 × 361,516.41
  4. Step 4: Simplify right side
    663,322.41x = 330,935,843,525.44
  5. Step 5: Solve for x
    x = 330,935,843,525.44/663,322.41
  6. Step 6: Final answer
    x = 498,906.47

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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.