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Finding the Third Proportional to 387,218.67 and 838,792.55

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Solution

The third proportional to 387,218.67 and 838,792.55 is: 1,816,991.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,218.67 : 838,792.55 = 838,792.55 : x
  2. Step 2: Convert to fraction form
    387,218.67/838,792.55 = 838,792.55/x
  3. Step 3: Cross multiply
    387,218.67x = 838,792.55 × 838,792.55
  4. Step 4: Simplify right side
    387,218.67x = 703,572,936,693.05
  5. Step 5: Solve for x
    x = 703,572,936,693.05/387,218.67
  6. Step 6: Final answer
    x = 1,816,991.24

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.