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Finding the Third Proportional to 393,975 and 576,988.50

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Solution

The third proportional to 393,975 and 576,988.50 is: 845,017.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,975 : 576,988.50 = 576,988.50 : x
  2. Step 2: Convert to fraction form
    393,975/576,988.50 = 576,988.50/x
  3. Step 3: Cross multiply
    393,975x = 576,988.50 × 576,988.50
  4. Step 4: Simplify right side
    393,975x = 332,915,729,132.25
  5. Step 5: Solve for x
    x = 332,915,729,132.25/393,975
  6. Step 6: Final answer
    x = 845,017.40

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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.