Home / 1,405,037.03-1,938,998.12-861,067.76

Finding the Fourth Proportional to 1,405,037.03, 1,938,998.12 and 861,067.76

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Solution

The fourth proportional to 1,405,037.03, 1,938,998.12 and 861,067.76 is: 1,188,302.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,037.03 : 1,938,998.12 = 861,067.76 : x
  2. Step 2: Convert to fraction form
    1,405,037.03/1,938,998.12 = 861,067.76/x
  3. Step 3: Cross multiply
    1,405,037.03x = 1,938,998.12 × 861,067.76
  4. Step 4: Simplify right side
    1,405,037.03x = 1,669,608,753,832.28
  5. Step 5: Solve for x
    x = 1,669,608,753,832.28/1,405,037.03
  6. Step 6: Final answer
    x = 1,188,302.32

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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.