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Finding the Third Proportional to 393,030 and 800,505

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Solution

The third proportional to 393,030 and 800,505 is: 1,630,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,030 : 800,505 = 800,505 : x
  2. Step 2: Convert to fraction form
    393,030/800,505 = 800,505/x
  3. Step 3: Cross multiply
    393,030x = 800,505 × 800,505
  4. Step 4: Simplify right side
    393,030x = 640,808,255,025
  5. Step 5: Solve for x
    x = 640,808,255,025/393,030
  6. Step 6: Final answer
    x = 1,630,430.90

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.