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Finding the Fourth Proportional to 647,578.40, 971,367.60 and 204,346.40

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Solution

The fourth proportional to 647,578.40, 971,367.60 and 204,346.40 is: 306,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,578.40 : 971,367.60 = 204,346.40 : x
  2. Step 2: Convert to fraction form
    647,578.40/971,367.60 = 204,346.40/x
  3. Step 3: Cross multiply
    647,578.40x = 971,367.60 × 204,346.40
  4. Step 4: Simplify right side
    647,578.40x = 198,495,472,136.64
  5. Step 5: Solve for x
    x = 198,495,472,136.64/647,578.40
  6. Step 6: Final answer
    x = 306,519.60

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Similar ratio
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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.