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Finding the Fourth Proportional to 647,717.70, 971,576.55 and 204,428.10

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Solution

The fourth proportional to 647,717.70, 971,576.55 and 204,428.10 is: 306,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,717.70 : 971,576.55 = 204,428.10 : x
  2. Step 2: Convert to fraction form
    647,717.70/971,576.55 = 204,428.10/x
  3. Step 3: Cross multiply
    647,717.70x = 971,576.55 × 204,428.10
  4. Step 4: Simplify right side
    647,717.70x = 198,617,548,121.06
  5. Step 5: Solve for x
    x = 198,617,548,121.06/647,717.70
  6. Step 6: Final answer
    x = 306,642.15

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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.