Home / 981,408.56-1,355,371.92-676,278.32

Finding the Fourth Proportional to 981,408.56, 1,355,371.92 and 676,278.32

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Solution

The fourth proportional to 981,408.56, 1,355,371.92 and 676,278.32 is: 933,972.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,408.56 : 1,355,371.92 = 676,278.32 : x
  2. Step 2: Convert to fraction form
    981,408.56/1,355,371.92 = 676,278.32/x
  3. Step 3: Cross multiply
    981,408.56x = 1,355,371.92 × 676,278.32
  4. Step 4: Simplify right side
    981,408.56x = 916,608,645,032.77
  5. Step 5: Solve for x
    x = 916,608,645,032.77/981,408.56
  6. Step 6: Final answer
    x = 933,972.54

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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.