Home / 1,188,138.90-1,781,496.61-378,173.46

Finding the Fourth Proportional to 1,188,138.90, 1,781,496.61 and 378,173.46

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Solution

The fourth proportional to 1,188,138.90, 1,781,496.61 and 378,173.46 is: 567,033.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,138.90 : 1,781,496.61 = 378,173.46 : x
  2. Step 2: Convert to fraction form
    1,188,138.90/1,781,496.61 = 378,173.46/x
  3. Step 3: Cross multiply
    1,188,138.90x = 1,781,496.61 × 378,173.46
  4. Step 4: Simplify right side
    1,188,138.90x = 673,714,736,981.97
  5. Step 5: Solve for x
    x = 673,714,736,981.97/1,188,138.90
  6. Step 6: Final answer
    x = 567,033.65

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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.