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Finding the Third Proportional to 289,174.50 and 621,813

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Solution

The third proportional to 289,174.50 and 621,813 is: 1,337,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,174.50 : 621,813 = 621,813 : x
  2. Step 2: Convert to fraction form
    289,174.50/621,813 = 621,813/x
  3. Step 3: Cross multiply
    289,174.50x = 621,813 × 621,813
  4. Step 4: Simplify right side
    289,174.50x = 386,651,406,969
  5. Step 5: Solve for x
    x = 386,651,406,969/289,174.50
  6. Step 6: Final answer
    x = 1,337,086.80

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.