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Finding the Fourth Proportional to 647,103.40, 970,655.10 and 332,175.40

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Solution

The fourth proportional to 647,103.40, 970,655.10 and 332,175.40 is: 498,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,103.40 : 970,655.10 = 332,175.40 : x
  2. Step 2: Convert to fraction form
    647,103.40/970,655.10 = 332,175.40/x
  3. Step 3: Cross multiply
    647,103.40x = 970,655.10 × 332,175.40
  4. Step 4: Simplify right side
    647,103.40x = 322,427,746,104.54
  5. Step 5: Solve for x
    x = 322,427,746,104.54/647,103.40
  6. Step 6: Final answer
    x = 498,263.10

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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.