Home / 685,385.20-1,027,348.80-330,167.80

Finding the Fourth Proportional to 685,385.20, 1,027,348.80 and 330,167.80

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Solution

The fourth proportional to 685,385.20, 1,027,348.80 and 330,167.80 is: 494,900.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,385.20 : 1,027,348.80 = 330,167.80 : x
  2. Step 2: Convert to fraction form
    685,385.20/1,027,348.80 = 330,167.80/x
  3. Step 3: Cross multiply
    685,385.20x = 1,027,348.80 × 330,167.80
  4. Step 4: Simplify right side
    685,385.20x = 339,197,493,128.64
  5. Step 5: Solve for x
    x = 339,197,493,128.64/685,385.20
  6. Step 6: Final answer
    x = 494,900.52

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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.