Home / 1,135,037.78-1,698,838.38-621,920.43

Finding the Fourth Proportional to 1,135,037.78, 1,698,838.38 and 621,920.43

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Solution

The fourth proportional to 1,135,037.78, 1,698,838.38 and 621,920.43 is: 930,843.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135,037.78 : 1,698,838.38 = 621,920.43 : x
  2. Step 2: Convert to fraction form
    1,135,037.78/1,698,838.38 = 621,920.43/x
  3. Step 3: Cross multiply
    1,135,037.78x = 1,698,838.38 × 621,920.43
  4. Step 4: Simplify right side
    1,135,037.78x = 1,056,542,295,790.10
  5. Step 5: Solve for x
    x = 1,056,542,295,790.10/1,135,037.78
  6. Step 6: Final answer
    x = 930,843.29

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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.