Home / 685,384.20-1,027,347.30-330,166.80

Finding the Fourth Proportional to 685,384.20, 1,027,347.30 and 330,166.80

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Solution

The fourth proportional to 685,384.20, 1,027,347.30 and 330,166.80 is: 494,899.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,384.20 : 1,027,347.30 = 330,166.80 : x
  2. Step 2: Convert to fraction form
    685,384.20/1,027,347.30 = 330,166.80/x
  3. Step 3: Cross multiply
    685,384.20x = 1,027,347.30 × 330,166.80
  4. Step 4: Simplify right side
    685,384.20x = 339,195,970,529.64
  5. Step 5: Solve for x
    x = 339,195,970,529.64/685,384.20
  6. Step 6: Final answer
    x = 494,899.02

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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.