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Finding the Fourth Proportional to 699,972.17, 965,963.19 and 389,872.27

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Solution

The fourth proportional to 699,972.17, 965,963.19 and 389,872.27 is: 538,024.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,972.17 : 965,963.19 = 389,872.27 : x
  2. Step 2: Convert to fraction form
    699,972.17/965,963.19 = 389,872.27/x
  3. Step 3: Cross multiply
    699,972.17x = 965,963.19 × 389,872.27
  4. Step 4: Simplify right side
    699,972.17x = 376,602,262,829.20
  5. Step 5: Solve for x
    x = 376,602,262,829.20/699,972.17
  6. Step 6: Final answer
    x = 538,024.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.