Home / 689,349.11-951,288.12-383,418.90

Finding the Fourth Proportional to 689,349.11, 951,288.12 and 383,418.90

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Solution

The fourth proportional to 689,349.11, 951,288.12 and 383,418.90 is: 529,110.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,349.11 : 951,288.12 = 383,418.90 : x
  2. Step 2: Convert to fraction form
    689,349.11/951,288.12 = 383,418.90/x
  3. Step 3: Cross multiply
    689,349.11x = 951,288.12 × 383,418.90
  4. Step 4: Simplify right side
    689,349.11x = 364,741,844,553.47
  5. Step 5: Solve for x
    x = 364,741,844,553.47/689,349.11
  6. Step 6: Final answer
    x = 529,110.49

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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.