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Finding the Fourth Proportional to 576,640.62, 795,747.83 and 318,512.42

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Solution

The fourth proportional to 576,640.62, 795,747.83 and 318,512.42 is: 439,538.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,640.62 : 795,747.83 = 318,512.42 : x
  2. Step 2: Convert to fraction form
    576,640.62/795,747.83 = 318,512.42/x
  3. Step 3: Cross multiply
    576,640.62x = 795,747.83 × 318,512.42
  4. Step 4: Simplify right side
    576,640.62x = 253,455,567,043.05
  5. Step 5: Solve for x
    x = 253,455,567,043.05/576,640.62
  6. Step 6: Final answer
    x = 439,538.18

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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.