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Finding the Third Proportional to 316,620 and 463,842

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Solution

The third proportional to 316,620 and 463,842 is: 679,519.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,620 : 463,842 = 463,842 : x
  2. Step 2: Convert to fraction form
    316,620/463,842 = 463,842/x
  3. Step 3: Cross multiply
    316,620x = 463,842 × 463,842
  4. Step 4: Simplify right side
    316,620x = 215,149,400,964
  5. Step 5: Solve for x
    x = 215,149,400,964/316,620
  6. Step 6: Final answer
    x = 679,519.30

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.