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Finding the Third Proportional to 389,226 and 838,473

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Solution

The third proportional to 389,226 and 838,473 is: 1,806,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,226 : 838,473 = 838,473 : x
  2. Step 2: Convert to fraction form
    389,226/838,473 = 838,473/x
  3. Step 3: Cross multiply
    389,226x = 838,473 × 838,473
  4. Step 4: Simplify right side
    389,226x = 703,036,971,729
  5. Step 5: Solve for x
    x = 703,036,971,729/389,226
  6. Step 6: Final answer
    x = 1,806,243.60

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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.