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Finding the Fourth Proportional to 1,269,146.07, 1,905,342.35 and 1,090,375.43

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Solution

The fourth proportional to 1,269,146.07, 1,905,342.35 and 1,090,375.43 is: 1,636,957.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,146.07 : 1,905,342.35 = 1,090,375.43 : x
  2. Step 2: Convert to fraction form
    1,269,146.07/1,905,342.35 = 1,090,375.43/x
  3. Step 3: Cross multiply
    1,269,146.07x = 1,905,342.35 × 1,090,375.43
  4. Step 4: Simplify right side
    1,269,146.07x = 2,077,538,469,199.87
  5. Step 5: Solve for x
    x = 2,077,538,469,199.87/1,269,146.07
  6. Step 6: Final answer
    x = 1,636,957.73

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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.