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Finding the Fourth Proportional to 2,978,458.65, 4,466,949.87 and 848,561.22

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Solution

The fourth proportional to 2,978,458.65, 4,466,949.87 and 848,561.22 is: 1,272,631.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,458.65 : 4,466,949.87 = 848,561.22 : x
  2. Step 2: Convert to fraction form
    2,978,458.65/4,466,949.87 = 848,561.22/x
  3. Step 3: Cross multiply
    2,978,458.65x = 4,466,949.87 × 848,561.22
  4. Step 4: Simplify right side
    2,978,458.65x = 3,790,480,431,366.04
  5. Step 5: Solve for x
    x = 3,790,480,431,366.04/2,978,458.65
  6. Step 6: Final answer
    x = 1,272,631.54

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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.