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Finding the Third Proportional to 393,729 and 610,818

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Solution

The third proportional to 393,729 and 610,818 is: 947,602.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,729 : 610,818 = 610,818 : x
  2. Step 2: Convert to fraction form
    393,729/610,818 = 610,818/x
  3. Step 3: Cross multiply
    393,729x = 610,818 × 610,818
  4. Step 4: Simplify right side
    393,729x = 373,098,629,124
  5. Step 5: Solve for x
    x = 373,098,629,124/393,729
  6. Step 6: Final answer
    x = 947,602.61

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.