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Finding the Third Proportional to 393,972 and 576,983.50

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Solution

The third proportional to 393,972 and 576,983.50 is: 845,009.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,972 : 576,983.50 = 576,983.50 : x
  2. Step 2: Convert to fraction form
    393,972/576,983.50 = 576,983.50/x
  3. Step 3: Cross multiply
    393,972x = 576,983.50 × 576,983.50
  4. Step 4: Simplify right side
    393,972x = 332,909,959,272.25
  5. Step 5: Solve for x
    x = 332,909,959,272.25/393,972
  6. Step 6: Final answer
    x = 845,009.19

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.