Home / 1,188,435.70-1,640,078.40-672,179.50

Finding the Fourth Proportional to 1,188,435.70, 1,640,078.40 and 672,179.50

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Solution

The fourth proportional to 1,188,435.70, 1,640,078.40 and 672,179.50 is: 927,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,435.70 : 1,640,078.40 = 672,179.50 : x
  2. Step 2: Convert to fraction form
    1,188,435.70/1,640,078.40 = 672,179.50/x
  3. Step 3: Cross multiply
    1,188,435.70x = 1,640,078.40 × 672,179.50
  4. Step 4: Simplify right side
    1,188,435.70x = 1,102,427,067,311.51
  5. Step 5: Solve for x
    x = 1,102,427,067,311.51/1,188,435.70
  6. Step 6: Final answer
    x = 927,628.70

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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.