Home / 685,150.20-1,027,725.30-330,200.10

Finding the Fourth Proportional to 685,150.20, 1,027,725.30 and 330,200.10

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Solution

The fourth proportional to 685,150.20, 1,027,725.30 and 330,200.10 is: 495,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,150.20 : 1,027,725.30 = 330,200.10 : x
  2. Step 2: Convert to fraction form
    685,150.20/1,027,725.30 = 330,200.10/x
  3. Step 3: Cross multiply
    685,150.20x = 1,027,725.30 × 330,200.10
  4. Step 4: Simplify right side
    685,150.20x = 339,354,996,832.53
  5. Step 5: Solve for x
    x = 339,354,996,832.53/685,150.20
  6. Step 6: Final answer
    x = 495,300.15

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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.