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Finding the Third Proportional to 395,516 and 819,070

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Solution

The third proportional to 395,516 and 819,070 is: 1,696,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,516 : 819,070 = 819,070 : x
  2. Step 2: Convert to fraction form
    395,516/819,070 = 819,070/x
  3. Step 3: Cross multiply
    395,516x = 819,070 × 819,070
  4. Step 4: Simplify right side
    395,516x = 670,875,664,900
  5. Step 5: Solve for x
    x = 670,875,664,900/395,516
  6. Step 6: Final answer
    x = 1,696,203.60

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.