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Finding the Fourth Proportional to 486,458.25, 671,539.92 and 282,469.44

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Solution

The fourth proportional to 486,458.25, 671,539.92 and 282,469.44 is: 389,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,458.25 : 671,539.92 = 282,469.44 : x
  2. Step 2: Convert to fraction form
    486,458.25/671,539.92 = 282,469.44/x
  3. Step 3: Cross multiply
    486,458.25x = 671,539.92 × 282,469.44
  4. Step 4: Simplify right side
    486,458.25x = 189,689,505,140.05
  5. Step 5: Solve for x
    x = 189,689,505,140.05/486,458.25
  6. Step 6: Final answer
    x = 389,939.95

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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.