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Finding the Fourth Proportional to 647,467.70, 971,201.55 and 608,069.30

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Solution

The fourth proportional to 647,467.70, 971,201.55 and 608,069.30 is: 912,103.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,467.70 : 971,201.55 = 608,069.30 : x
  2. Step 2: Convert to fraction form
    647,467.70/971,201.55 = 608,069.30/x
  3. Step 3: Cross multiply
    647,467.70x = 971,201.55 × 608,069.30
  4. Step 4: Simplify right side
    647,467.70x = 590,557,846,667.42
  5. Step 5: Solve for x
    x = 590,557,846,667.42/647,467.70
  6. Step 6: Final answer
    x = 912,103.95

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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.