Home / 689,120.10-1,033,793.55-215,691.30

Finding the Fourth Proportional to 689,120.10, 1,033,793.55 and 215,691.30

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Solution

The fourth proportional to 689,120.10, 1,033,793.55 and 215,691.30 is: 323,572.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,120.10 : 1,033,793.55 = 215,691.30 : x
  2. Step 2: Convert to fraction form
    689,120.10/1,033,793.55 = 215,691.30/x
  3. Step 3: Cross multiply
    689,120.10x = 1,033,793.55 × 215,691.30
  4. Step 4: Simplify right side
    689,120.10x = 222,980,274,731.12
  5. Step 5: Solve for x
    x = 222,980,274,731.12/689,120.10
  6. Step 6: Final answer
    x = 323,572.44

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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.