Home / 685,890.18-1,028,866.86-331,202.52

Finding the Fourth Proportional to 685,890.18, 1,028,866.86 and 331,202.52

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Solution

The fourth proportional to 685,890.18, 1,028,866.86 and 331,202.52 is: 496,819.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,890.18 : 1,028,866.86 = 331,202.52 : x
  2. Step 2: Convert to fraction form
    685,890.18/1,028,866.86 = 331,202.52/x
  3. Step 3: Cross multiply
    685,890.18x = 1,028,866.86 × 331,202.52
  4. Step 4: Simplify right side
    685,890.18x = 340,763,296,776.49
  5. Step 5: Solve for x
    x = 340,763,296,776.49/685,890.18
  6. Step 6: Final answer
    x = 496,819.03

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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.