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Finding the Third Proportional to 643,718.81 and 1,398,046.50

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Solution

The third proportional to 643,718.81 and 1,398,046.50 is: 3,036,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,718.81 : 1,398,046.50 = 1,398,046.50 : x
  2. Step 2: Convert to fraction form
    643,718.81/1,398,046.50 = 1,398,046.50/x
  3. Step 3: Cross multiply
    643,718.81x = 1,398,046.50 × 1,398,046.50
  4. Step 4: Simplify right side
    643,718.81x = 1,954,534,016,162.25
  5. Step 5: Solve for x
    x = 1,954,534,016,162.25/643,718.81
  6. Step 6: Final answer
    x = 3,036,316.44

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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.