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Finding the Fourth Proportional to 503,228.86, 694,713 and 388,249.36

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Solution

The fourth proportional to 503,228.86, 694,713 and 388,249.36 is: 535,982.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,228.86 : 694,713 = 388,249.36 : x
  2. Step 2: Convert to fraction form
    503,228.86/694,713 = 388,249.36/x
  3. Step 3: Cross multiply
    503,228.86x = 694,713 × 388,249.36
  4. Step 4: Simplify right side
    503,228.86x = 269,721,877,633.68
  5. Step 5: Solve for x
    x = 269,721,877,633.68/503,228.86
  6. Step 6: Final answer
    x = 535,982.53

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1.5x scale

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.