Home / 686,372.94-1,029,493.80-419,996.34

Finding the Fourth Proportional to 686,372.94, 1,029,493.80 and 419,996.34

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Solution

The fourth proportional to 686,372.94, 1,029,493.80 and 419,996.34 is: 629,954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,372.94 : 1,029,493.80 = 419,996.34 : x
  2. Step 2: Convert to fraction form
    686,372.94/1,029,493.80 = 419,996.34/x
  3. Step 3: Cross multiply
    686,372.94x = 1,029,493.80 × 419,996.34
  4. Step 4: Simplify right side
    686,372.94x = 432,383,628,052.69
  5. Step 5: Solve for x
    x = 432,383,628,052.69/686,372.94
  6. Step 6: Final answer
    x = 629,954.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.