Home / 689,305.05-951,224.34-383,380.52

Finding the Fourth Proportional to 689,305.05, 951,224.34 and 383,380.52

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Solution

The fourth proportional to 689,305.05, 951,224.34 and 383,380.52 is: 529,055.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,305.05 : 951,224.34 = 383,380.52 : x
  2. Step 2: Convert to fraction form
    689,305.05/951,224.34 = 383,380.52/x
  3. Step 3: Cross multiply
    689,305.05x = 951,224.34 × 383,380.52
  4. Step 4: Simplify right side
    689,305.05x = 364,680,882,105.86
  5. Step 5: Solve for x
    x = 364,680,882,105.86/689,305.05
  6. Step 6: Final answer
    x = 529,055.87

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.