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Finding the Fourth Proportional to 663,942.44, 995,403.18 and 343,751

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Solution

The fourth proportional to 663,942.44, 995,403.18 and 343,751 is: 515,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,942.44 : 995,403.18 = 343,751 : x
  2. Step 2: Convert to fraction form
    663,942.44/995,403.18 = 343,751/x
  3. Step 3: Cross multiply
    663,942.44x = 995,403.18 × 343,751
  4. Step 4: Simplify right side
    663,942.44x = 342,170,838,528.18
  5. Step 5: Solve for x
    x = 342,170,838,528.18/663,942.44
  6. Step 6: Final answer
    x = 515,362.20

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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.