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Finding the Third Proportional to 318,389 and 692,992

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Solution

The third proportional to 318,389 and 692,992 is: 1,508,337.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,389 : 692,992 = 692,992 : x
  2. Step 2: Convert to fraction form
    318,389/692,992 = 692,992/x
  3. Step 3: Cross multiply
    318,389x = 692,992 × 692,992
  4. Step 4: Simplify right side
    318,389x = 480,237,912,064
  5. Step 5: Solve for x
    x = 480,237,912,064/318,389
  6. Step 6: Final answer
    x = 1,508,337.01

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.