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Finding the Third Proportional to 318,878.25 and 693,803.25

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Solution

The third proportional to 318,878.25 and 693,803.25 is: 1,509,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,878.25 : 693,803.25 = 693,803.25 : x
  2. Step 2: Convert to fraction form
    318,878.25/693,803.25 = 693,803.25/x
  3. Step 3: Cross multiply
    318,878.25x = 693,803.25 × 693,803.25
  4. Step 4: Simplify right side
    318,878.25x = 481,362,949,710.56
  5. Step 5: Solve for x
    x = 481,362,949,710.56/318,878.25
  6. Step 6: Final answer
    x = 1,509,550.90

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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.