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Finding the Fourth Proportional to 699,604.10, 965,379.22 and 393,675.15

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Solution

The fourth proportional to 699,604.10, 965,379.22 and 393,675.15 is: 543,229.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,604.10 : 965,379.22 = 393,675.15 : x
  2. Step 2: Convert to fraction form
    699,604.10/965,379.22 = 393,675.15/x
  3. Step 3: Cross multiply
    699,604.10x = 965,379.22 × 393,675.15
  4. Step 4: Simplify right side
    699,604.10x = 380,045,808,080.49
  5. Step 5: Solve for x
    x = 380,045,808,080.49/699,604.10
  6. Step 6: Final answer
    x = 543,229.82

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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.