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Finding the Fourth Proportional to 1,310,489.78, 1,809,033.90 and 881,019

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Solution

The fourth proportional to 1,310,489.78, 1,809,033.90 and 881,019 is: 1,216,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,489.78 : 1,809,033.90 = 881,019 : x
  2. Step 2: Convert to fraction form
    1,310,489.78/1,809,033.90 = 881,019/x
  3. Step 3: Cross multiply
    1,310,489.78x = 1,809,033.90 × 881,019
  4. Step 4: Simplify right side
    1,310,489.78x = 1,593,793,237,544.10
  5. Step 5: Solve for x
    x = 1,593,793,237,544.10/1,310,489.78
  6. Step 6: Final answer
    x = 1,216,181.36

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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.