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Finding the Third Proportional to 721,639.50 and 1,142,615.25

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Solution

The third proportional to 721,639.50 and 1,142,615.25 is: 1,809,171.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,639.50 : 1,142,615.25 = 1,142,615.25 : x
  2. Step 2: Convert to fraction form
    721,639.50/1,142,615.25 = 1,142,615.25/x
  3. Step 3: Cross multiply
    721,639.50x = 1,142,615.25 × 1,142,615.25
  4. Step 4: Simplify right side
    721,639.50x = 1,305,569,609,532.56
  5. Step 5: Solve for x
    x = 1,305,569,609,532.56/721,639.50
  6. Step 6: Final answer
    x = 1,809,171.49

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.