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Finding the Third Proportional to 319,752 and 690,736

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Solution

The third proportional to 319,752 and 690,736 is: 1,492,144.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,752 : 690,736 = 690,736 : x
  2. Step 2: Convert to fraction form
    319,752/690,736 = 690,736/x
  3. Step 3: Cross multiply
    319,752x = 690,736 × 690,736
  4. Step 4: Simplify right side
    319,752x = 477,116,221,696
  5. Step 5: Solve for x
    x = 477,116,221,696/319,752
  6. Step 6: Final answer
    x = 1,492,144.60

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.