Home / 689,743.30-1,034,658.68-216,447.34

Finding the Fourth Proportional to 689,743.30, 1,034,658.68 and 216,447.34

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Solution

The fourth proportional to 689,743.30, 1,034,658.68 and 216,447.34 is: 324,684.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,743.30 : 1,034,658.68 = 216,447.34 : x
  2. Step 2: Convert to fraction form
    689,743.30/1,034,658.68 = 216,447.34/x
  3. Step 3: Cross multiply
    689,743.30x = 1,034,658.68 × 216,447.34
  4. Step 4: Simplify right side
    689,743.30x = 223,949,119,093.91
  5. Step 5: Solve for x
    x = 223,949,119,093.91/689,743.30
  6. Step 6: Final answer
    x = 324,684.73

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Double scale
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Similar ratio
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1.5x scale

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.