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Finding the Fourth Proportional to 557,793.20, 836,689.80 and 317,660.60

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Solution

The fourth proportional to 557,793.20, 836,689.80 and 317,660.60 is: 476,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,793.20 : 836,689.80 = 317,660.60 : x
  2. Step 2: Convert to fraction form
    557,793.20/836,689.80 = 317,660.60/x
  3. Step 3: Cross multiply
    557,793.20x = 836,689.80 × 317,660.60
  4. Step 4: Simplify right side
    557,793.20x = 265,783,383,881.88
  5. Step 5: Solve for x
    x = 265,783,383,881.88/557,793.20
  6. Step 6: Final answer
    x = 476,490.90

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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.