Home / 792,138.70-1,188,208.05-660,918.70

Finding the Fourth Proportional to 792,138.70, 1,188,208.05 and 660,918.70

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Solution

The fourth proportional to 792,138.70, 1,188,208.05 and 660,918.70 is: 991,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,138.70 : 1,188,208.05 = 660,918.70 : x
  2. Step 2: Convert to fraction form
    792,138.70/1,188,208.05 = 660,918.70/x
  3. Step 3: Cross multiply
    792,138.70x = 1,188,208.05 × 660,918.70
  4. Step 4: Simplify right side
    792,138.70x = 785,308,919,735.54
  5. Step 5: Solve for x
    x = 785,308,919,735.54/792,138.70
  6. Step 6: Final answer
    x = 991,378.05

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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.