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Finding the Fourth Proportional to 503,235.99, 694,722.83 and 388,256.49

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Solution

The fourth proportional to 503,235.99, 694,722.83 and 388,256.49 is: 535,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,235.99 : 694,722.83 = 388,256.49 : x
  2. Step 2: Convert to fraction form
    503,235.99/694,722.83 = 388,256.49/x
  3. Step 3: Cross multiply
    503,235.99x = 694,722.83 × 388,256.49
  4. Step 4: Simplify right side
    503,235.99x = 269,730,645,557.38
  5. Step 5: Solve for x
    x = 269,730,645,557.38/503,235.99
  6. Step 6: Final answer
    x = 535,992.36

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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.