Home / 3,138,361.28-4,330,811.04-1,780,205.12

Finding the Fourth Proportional to 3,138,361.28, 4,330,811.04 and 1,780,205.12

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Solution

The fourth proportional to 3,138,361.28, 4,330,811.04 and 1,780,205.12 is: 2,456,610.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138,361.28 : 4,330,811.04 = 1,780,205.12 : x
  2. Step 2: Convert to fraction form
    3,138,361.28/4,330,811.04 = 1,780,205.12/x
  3. Step 3: Cross multiply
    3,138,361.28x = 4,330,811.04 × 1,780,205.12
  4. Step 4: Simplify right side
    3,138,361.28x = 7,709,731,987,160.53
  5. Step 5: Solve for x
    x = 7,709,731,987,160.53/3,138,361.28
  6. Step 6: Final answer
    x = 2,456,610.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.