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Finding the Third Proportional to 395,679 and 805,342

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Solution

The third proportional to 395,679 and 805,342 is: 1,639,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,679 : 805,342 = 805,342 : x
  2. Step 2: Convert to fraction form
    395,679/805,342 = 805,342/x
  3. Step 3: Cross multiply
    395,679x = 805,342 × 805,342
  4. Step 4: Simplify right side
    395,679x = 648,575,736,964
  5. Step 5: Solve for x
    x = 648,575,736,964/395,679
  6. Step 6: Final answer
    x = 1,639,146.22

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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.