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Finding the Fourth Proportional to 488,704.11, 674,011.82 and 343,988.95

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Solution

The fourth proportional to 488,704.11, 674,011.82 and 343,988.95 is: 474,423.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,704.11 : 674,011.82 = 343,988.95 : x
  2. Step 2: Convert to fraction form
    488,704.11/674,011.82 = 343,988.95/x
  3. Step 3: Cross multiply
    488,704.11x = 674,011.82 × 343,988.95
  4. Step 4: Simplify right side
    488,704.11x = 231,852,618,249.39
  5. Step 5: Solve for x
    x = 231,852,618,249.39/488,704.11
  6. Step 6: Final answer
    x = 474,423.31

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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.