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Finding the Fourth Proportional to 488,436.55, 674,078.18 and 294,891.91

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Solution

The fourth proportional to 488,436.55, 674,078.18 and 294,891.91 is: 406,972.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,436.55 : 674,078.18 = 294,891.91 : x
  2. Step 2: Convert to fraction form
    488,436.55/674,078.18 = 294,891.91/x
  3. Step 3: Cross multiply
    488,436.55x = 674,078.18 × 294,891.91
  4. Step 4: Simplify right side
    488,436.55x = 198,780,201,989.52
  5. Step 5: Solve for x
    x = 198,780,201,989.52/488,436.55
  6. Step 6: Final answer
    x = 406,972.41

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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.