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Finding the Fourth Proportional to 807,907.06, 1,211,891.22 and 302,414.80

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Solution

The fourth proportional to 807,907.06, 1,211,891.22 and 302,414.80 is: 453,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,907.06 : 1,211,891.22 = 302,414.80 : x
  2. Step 2: Convert to fraction form
    807,907.06/1,211,891.22 = 302,414.80/x
  3. Step 3: Cross multiply
    807,907.06x = 1,211,891.22 × 302,414.80
  4. Step 4: Simplify right side
    807,907.06x = 366,493,840,918.06
  5. Step 5: Solve for x
    x = 366,493,840,918.06/807,907.06
  6. Step 6: Final answer
    x = 453,633.67

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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.