Home / 689,084.52-951,015.38-383,191.40

Finding the Fourth Proportional to 689,084.52, 951,015.38 and 383,191.40

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Solution

The fourth proportional to 689,084.52, 951,015.38 and 383,191.40 is: 528,847.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,084.52 : 951,015.38 = 383,191.40 : x
  2. Step 2: Convert to fraction form
    689,084.52/951,015.38 = 383,191.40/x
  3. Step 3: Cross multiply
    689,084.52x = 951,015.38 × 383,191.40
  4. Step 4: Simplify right side
    689,084.52x = 364,420,914,883.73
  5. Step 5: Solve for x
    x = 364,420,914,883.73/689,084.52
  6. Step 6: Final answer
    x = 528,847.92

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.