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Finding the Fourth Proportional to 647,015.40, 970,523.10 and 226,247.40

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Solution

The fourth proportional to 647,015.40, 970,523.10 and 226,247.40 is: 339,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,015.40 : 970,523.10 = 226,247.40 : x
  2. Step 2: Convert to fraction form
    647,015.40/970,523.10 = 226,247.40/x
  3. Step 3: Cross multiply
    647,015.40x = 970,523.10 × 226,247.40
  4. Step 4: Simplify right side
    647,015.40x = 219,578,328,014.94
  5. Step 5: Solve for x
    x = 219,578,328,014.94/647,015.40
  6. Step 6: Final answer
    x = 339,371.10

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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.