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Finding the Fourth Proportional to 660,576.62, 911,540.08 and 366,234.21

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Solution

The fourth proportional to 660,576.62, 911,540.08 and 366,234.21 is: 505,372.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,576.62 : 911,540.08 = 366,234.21 : x
  2. Step 2: Convert to fraction form
    660,576.62/911,540.08 = 366,234.21/x
  3. Step 3: Cross multiply
    660,576.62x = 911,540.08 × 366,234.21
  4. Step 4: Simplify right side
    660,576.62x = 333,837,161,539.93
  5. Step 5: Solve for x
    x = 333,837,161,539.93/660,576.62
  6. Step 6: Final answer
    x = 505,372.36

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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.