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Finding the Fourth Proportional to 455,791.30, 682,702.80 and 396,742.30

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Solution

The fourth proportional to 455,791.30, 682,702.80 and 396,742.30 is: 594,256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,791.30 : 682,702.80 = 396,742.30 : x
  2. Step 2: Convert to fraction form
    455,791.30/682,702.80 = 396,742.30/x
  3. Step 3: Cross multiply
    455,791.30x = 682,702.80 × 396,742.30
  4. Step 4: Simplify right side
    455,791.30x = 270,857,079,088.44
  5. Step 5: Solve for x
    x = 270,857,079,088.44/455,791.30
  6. Step 6: Final answer
    x = 594,256.80

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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.