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Finding the Fourth Proportional to 862,775.78, 1,294,167 and 263,734.64

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Solution

The fourth proportional to 862,775.78, 1,294,167 and 263,734.64 is: 395,602.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,775.78 : 1,294,167 = 263,734.64 : x
  2. Step 2: Convert to fraction form
    862,775.78/1,294,167 = 263,734.64/x
  3. Step 3: Cross multiply
    862,775.78x = 1,294,167 × 263,734.64
  4. Step 4: Simplify right side
    862,775.78x = 341,316,667,844.88
  5. Step 5: Solve for x
    x = 341,316,667,844.88/862,775.78
  6. Step 6: Final answer
    x = 395,602.98

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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.