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Finding the Fourth Proportional to 806,967.72, 1,210,451.31 and 267,078.96

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Solution

The fourth proportional to 806,967.72, 1,210,451.31 and 267,078.96 is: 400,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,967.72 : 1,210,451.31 = 267,078.96 : x
  2. Step 2: Convert to fraction form
    806,967.72/1,210,451.31 = 267,078.96/x
  3. Step 3: Cross multiply
    806,967.72x = 1,210,451.31 × 267,078.96
  4. Step 4: Simplify right side
    806,967.72x = 323,286,077,005.44
  5. Step 5: Solve for x
    x = 323,286,077,005.44/806,967.72
  6. Step 6: Final answer
    x = 400,618.35

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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.