Home / 685,609.56-1,029,077.73-330,873.30

Finding the Fourth Proportional to 685,609.56, 1,029,077.73 and 330,873.30

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Solution

The fourth proportional to 685,609.56, 1,029,077.73 and 330,873.30 is: 496,630.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,609.56 : 1,029,077.73 = 330,873.30 : x
  2. Step 2: Convert to fraction form
    685,609.56/1,029,077.73 = 330,873.30/x
  3. Step 3: Cross multiply
    685,609.56x = 1,029,077.73 × 330,873.30
  4. Step 4: Simplify right side
    685,609.56x = 340,494,344,481.61
  5. Step 5: Solve for x
    x = 340,494,344,481.61/685,609.56
  6. Step 6: Final answer
    x = 496,630.10

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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.