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Finding the Third Proportional to 318,740 and 695,434

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Solution

The third proportional to 318,740 and 695,434 is: 1,517,313.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,740 : 695,434 = 695,434 : x
  2. Step 2: Convert to fraction form
    318,740/695,434 = 695,434/x
  3. Step 3: Cross multiply
    318,740x = 695,434 × 695,434
  4. Step 4: Simplify right side
    318,740x = 483,628,448,356
  5. Step 5: Solve for x
    x = 483,628,448,356/318,740
  6. Step 6: Final answer
    x = 1,517,313.32

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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.