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Finding the Third Proportional to 5,238,428.38 and 7,825,381.63

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Solution

The third proportional to 5,238,428.38 and 7,825,381.63 is: 11,689,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238,428.38 : 7,825,381.63 = 7,825,381.63 : x
  2. Step 2: Convert to fraction form
    5,238,428.38/7,825,381.63 = 7,825,381.63/x
  3. Step 3: Cross multiply
    5,238,428.38x = 7,825,381.63 × 7,825,381.63
  4. Step 4: Simplify right side
    5,238,428.38x = 61,236,597,576,887.64
  5. Step 5: Solve for x
    x = 61,236,597,576,887.64/5,238,428.38
  6. Step 6: Final answer
    x = 11,689,879.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.