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Finding the Fourth Proportional to 647,339.20, 971,446.20 and 363,029.20

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Solution

The fourth proportional to 647,339.20, 971,446.20 and 363,029.20 is: 544,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,339.20 : 971,446.20 = 363,029.20 : x
  2. Step 2: Convert to fraction form
    647,339.20/971,446.20 = 363,029.20/x
  3. Step 3: Cross multiply
    647,339.20x = 971,446.20 × 363,029.20
  4. Step 4: Simplify right side
    647,339.20x = 352,663,336,829.04
  5. Step 5: Solve for x
    x = 352,663,336,829.04/647,339.20
  6. Step 6: Final answer
    x = 544,789.09

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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.