Home / 820,138.30-1,230,207.45-566,883.70

Finding the Fourth Proportional to 820,138.30, 1,230,207.45 and 566,883.70

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Solution

The fourth proportional to 820,138.30, 1,230,207.45 and 566,883.70 is: 850,325.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,138.30 : 1,230,207.45 = 566,883.70 : x
  2. Step 2: Convert to fraction form
    820,138.30/1,230,207.45 = 566,883.70/x
  3. Step 3: Cross multiply
    820,138.30x = 1,230,207.45 × 566,883.70
  4. Step 4: Simplify right side
    820,138.30x = 697,384,551,023.57
  5. Step 5: Solve for x
    x = 697,384,551,023.57/820,138.30
  6. Step 6: Final answer
    x = 850,325.55

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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.