Home / 689,138.98-1,033,708.54-215,861.26

Finding the Fourth Proportional to 689,138.98, 1,033,708.54 and 215,861.26

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Solution

The fourth proportional to 689,138.98, 1,033,708.54 and 215,861.26 is: 323,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,138.98 : 1,033,708.54 = 215,861.26 : x
  2. Step 2: Convert to fraction form
    689,138.98/1,033,708.54 = 215,861.26/x
  3. Step 3: Cross multiply
    689,138.98x = 1,033,708.54 × 215,861.26
  4. Step 4: Simplify right side
    689,138.98x = 223,137,627,917.16
  5. Step 5: Solve for x
    x = 223,137,627,917.16/689,138.98
  6. Step 6: Final answer
    x = 323,791.91

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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.