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Finding the Fourth Proportional to 647,790.40, 971,685.60 and 204,558.40

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Solution

The fourth proportional to 647,790.40, 971,685.60 and 204,558.40 is: 306,837.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,790.40 : 971,685.60 = 204,558.40 : x
  2. Step 2: Convert to fraction form
    647,790.40/971,685.60 = 204,558.40/x
  3. Step 3: Cross multiply
    647,790.40x = 971,685.60 × 204,558.40
  4. Step 4: Simplify right side
    647,790.40x = 198,766,451,639.04
  5. Step 5: Solve for x
    x = 198,766,451,639.04/647,790.40
  6. Step 6: Final answer
    x = 306,837.60

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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.