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Finding the Third Proportional to 839,430 and 1,812,879

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Solution

The third proportional to 839,430 and 1,812,879 is: 3,915,192.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,430 : 1,812,879 = 1,812,879 : x
  2. Step 2: Convert to fraction form
    839,430/1,812,879 = 1,812,879/x
  3. Step 3: Cross multiply
    839,430x = 1,812,879 × 1,812,879
  4. Step 4: Simplify right side
    839,430x = 3,286,530,268,641
  5. Step 5: Solve for x
    x = 3,286,530,268,641/839,430
  6. Step 6: Final answer
    x = 3,915,192.77

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.