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Finding the Third Proportional to 320,717 and 692,284

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Solution

The third proportional to 320,717 and 692,284 is: 1,494,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,717 : 692,284 = 692,284 : x
  2. Step 2: Convert to fraction form
    320,717/692,284 = 692,284/x
  3. Step 3: Cross multiply
    320,717x = 692,284 × 692,284
  4. Step 4: Simplify right side
    320,717x = 479,257,136,656
  5. Step 5: Solve for x
    x = 479,257,136,656/320,717
  6. Step 6: Final answer
    x = 1,494,330.32

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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.