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Finding the Fourth Proportional to 543,631.20, 813,891.60 and 333,679.20

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Solution

The fourth proportional to 543,631.20, 813,891.60 and 333,679.20 is: 499,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,631.20 : 813,891.60 = 333,679.20 : x
  2. Step 2: Convert to fraction form
    543,631.20/813,891.60 = 333,679.20/x
  3. Step 3: Cross multiply
    543,631.20x = 813,891.60 × 333,679.20
  4. Step 4: Simplify right side
    543,631.20x = 271,578,697,974.72
  5. Step 5: Solve for x
    x = 271,578,697,974.72/543,631.20
  6. Step 6: Final answer
    x = 499,564.22

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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.