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Finding the Fourth Proportional to 500,063.39, 690,013.28 and 303,727.77

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Solution

The fourth proportional to 500,063.39, 690,013.28 and 303,727.77 is: 419,099.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,063.39 : 690,013.28 = 303,727.77 : x
  2. Step 2: Convert to fraction form
    500,063.39/690,013.28 = 303,727.77/x
  3. Step 3: Cross multiply
    500,063.39x = 690,013.28 × 303,727.77
  4. Step 4: Simplify right side
    500,063.39x = 209,576,193,286.15
  5. Step 5: Solve for x
    x = 209,576,193,286.15/500,063.39
  6. Step 6: Final answer
    x = 419,099.26

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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.