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Finding the Fourth Proportional to 1,382,505, 1,907,856.90 and 746,601

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Solution

The fourth proportional to 1,382,505, 1,907,856.90 and 746,601 is: 1,030,309.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,505 : 1,907,856.90 = 746,601 : x
  2. Step 2: Convert to fraction form
    1,382,505/1,907,856.90 = 746,601/x
  3. Step 3: Cross multiply
    1,382,505x = 1,907,856.90 × 746,601
  4. Step 4: Simplify right side
    1,382,505x = 1,424,407,869,396.90
  5. Step 5: Solve for x
    x = 1,424,407,869,396.90/1,382,505
  6. Step 6: Final answer
    x = 1,030,309.38

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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.