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Finding the Fourth Proportional to 1,281,974.15, 1,769,316.21 and 798,694.94

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Solution

The fourth proportional to 1,281,974.15, 1,769,316.21 and 798,694.94 is: 1,102,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,974.15 : 1,769,316.21 = 798,694.94 : x
  2. Step 2: Convert to fraction form
    1,281,974.15/1,769,316.21 = 798,694.94/x
  3. Step 3: Cross multiply
    1,281,974.15x = 1,769,316.21 × 798,694.94
  4. Step 4: Simplify right side
    1,281,974.15x = 1,413,143,908,610.27
  5. Step 5: Solve for x
    x = 1,413,143,908,610.27/1,281,974.15
  6. Step 6: Final answer
    x = 1,102,318.57

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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.