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Finding the Third Proportional to 390,506 and 852,616

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Solution

The third proportional to 390,506 and 852,616 is: 1,861,569.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,506 : 852,616 = 852,616 : x
  2. Step 2: Convert to fraction form
    390,506/852,616 = 852,616/x
  3. Step 3: Cross multiply
    390,506x = 852,616 × 852,616
  4. Step 4: Simplify right side
    390,506x = 726,954,043,456
  5. Step 5: Solve for x
    x = 726,954,043,456/390,506
  6. Step 6: Final answer
    x = 1,861,569.46

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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.