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Finding the Fourth Proportional to 647,796.49, 965,046.30 and 618,650.38

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Solution

The fourth proportional to 647,796.49, 965,046.30 and 618,650.38 is: 921,626.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,796.49 : 965,046.30 = 618,650.38 : x
  2. Step 2: Convert to fraction form
    647,796.49/965,046.30 = 618,650.38/x
  3. Step 3: Cross multiply
    647,796.49x = 965,046.30 × 618,650.38
  4. Step 4: Simplify right side
    647,796.49x = 597,026,258,665.97
  5. Step 5: Solve for x
    x = 597,026,258,665.97/647,796.49
  6. Step 6: Final answer
    x = 921,626.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.