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Finding the Third Proportional to 320,679 and 692,748

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Solution

The third proportional to 320,679 and 692,748 is: 1,496,511.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,679 : 692,748 = 692,748 : x
  2. Step 2: Convert to fraction form
    320,679/692,748 = 692,748/x
  3. Step 3: Cross multiply
    320,679x = 692,748 × 692,748
  4. Step 4: Simplify right side
    320,679x = 479,899,791,504
  5. Step 5: Solve for x
    x = 479,899,791,504/320,679
  6. Step 6: Final answer
    x = 1,496,511.44

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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.