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Finding the Third Proportional to 647,302.50 and 990,663.75

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Solution

The third proportional to 647,302.50 and 990,663.75 is: 1,516,160.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,302.50 : 990,663.75 = 990,663.75 : x
  2. Step 2: Convert to fraction form
    647,302.50/990,663.75 = 990,663.75/x
  3. Step 3: Cross multiply
    647,302.50x = 990,663.75 × 990,663.75
  4. Step 4: Simplify right side
    647,302.50x = 981,414,665,564.06
  5. Step 5: Solve for x
    x = 981,414,665,564.06/647,302.50
  6. Step 6: Final answer
    x = 1,516,160.78

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.