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Finding the Fourth Proportional to 663,907.10, 995,350.21 and 343,715.72

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Solution

The fourth proportional to 663,907.10, 995,350.21 and 343,715.72 is: 515,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,907.10 : 995,350.21 = 343,715.72 : x
  2. Step 2: Convert to fraction form
    663,907.10/995,350.21 = 343,715.72/x
  3. Step 3: Cross multiply
    663,907.10x = 995,350.21 × 343,715.72
  4. Step 4: Simplify right side
    663,907.10x = 342,117,508,246.26
  5. Step 5: Solve for x
    x = 342,117,508,246.26/663,907.10
  6. Step 6: Final answer
    x = 515,309.31

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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.