Home / 419,914,606.60-629,871,909.90-394,405,438.60

Finding the Fourth Proportional to 419,914,606.60, 629,871,909.90 and 394,405,438.60

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Solution

The fourth proportional to 419,914,606.60, 629,871,909.90 and 394,405,438.60 is: 591,608,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,914,606.60 : 629,871,909.90 = 394,405,438.60 : x
  2. Step 2: Convert to fraction form
    419,914,606.60/629,871,909.90 = 394,405,438.60/x
  3. Step 3: Cross multiply
    419,914,606.60x = 629,871,909.90 × 394,405,438.60
  4. Step 4: Simplify right side
    419,914,606.60x = 248,424,906,885,929,184
  5. Step 5: Solve for x
    x = 248,424,906,885,929,184/419,914,606.60
  6. Step 6: Final answer
    x = 591,608,157.90

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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.