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Finding the Fourth Proportional to 503,227.86, 694,711.62 and 388,248.36

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Solution

The fourth proportional to 503,227.86, 694,711.62 and 388,248.36 is: 535,981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,227.86 : 694,711.62 = 388,248.36 : x
  2. Step 2: Convert to fraction form
    503,227.86/694,711.62 = 388,248.36/x
  3. Step 3: Cross multiply
    503,227.86x = 694,711.62 × 388,248.36
  4. Step 4: Simplify right side
    503,227.86x = 269,720,647,137.94
  5. Step 5: Solve for x
    x = 269,720,647,137.94/503,227.86
  6. Step 6: Final answer
    x = 535,981.15

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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.