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Finding the Third Proportional to 387,388 and 843,396

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Solution

The third proportional to 387,388 and 843,396 is: 1,836,187.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,388 : 843,396 = 843,396 : x
  2. Step 2: Convert to fraction form
    387,388/843,396 = 843,396/x
  3. Step 3: Cross multiply
    387,388x = 843,396 × 843,396
  4. Step 4: Simplify right side
    387,388x = 711,316,812,816
  5. Step 5: Solve for x
    x = 711,316,812,816/387,388
  6. Step 6: Final answer
    x = 1,836,187.01

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.