Home / 685,847.70-1,029,435.56-331,110.63

Finding the Fourth Proportional to 685,847.70, 1,029,435.56 and 331,110.63

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Solution

The fourth proportional to 685,847.70, 1,029,435.56 and 331,110.63 is: 496,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,847.70 : 1,029,435.56 = 331,110.63 : x
  2. Step 2: Convert to fraction form
    685,847.70/1,029,435.56 = 331,110.63/x
  3. Step 3: Cross multiply
    685,847.70x = 1,029,435.56 × 331,110.63
  4. Step 4: Simplify right side
    685,847.70x = 340,857,055,160.45
  5. Step 5: Solve for x
    x = 340,857,055,160.45/685,847.70
  6. Step 6: Final answer
    x = 496,986.51

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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.