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Finding the Fourth Proportional to 635,813.44, 953,964.72 and 280,576.48

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Solution

The fourth proportional to 635,813.44, 953,964.72 and 280,576.48 is: 420,972.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,813.44 : 953,964.72 = 280,576.48 : x
  2. Step 2: Convert to fraction form
    635,813.44/953,964.72 = 280,576.48/x
  3. Step 3: Cross multiply
    635,813.44x = 953,964.72 × 280,576.48
  4. Step 4: Simplify right side
    635,813.44x = 267,660,063,181.79
  5. Step 5: Solve for x
    x = 267,660,063,181.79/635,813.44
  6. Step 6: Final answer
    x = 420,972.64

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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.