Home / 1,440,209.68-1,987,546.20-828,361.46

Finding the Fourth Proportional to 1,440,209.68, 1,987,546.20 and 828,361.46

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Solution

The fourth proportional to 1,440,209.68, 1,987,546.20 and 828,361.46 is: 1,143,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,209.68 : 1,987,546.20 = 828,361.46 : x
  2. Step 2: Convert to fraction form
    1,440,209.68/1,987,546.20 = 828,361.46/x
  3. Step 3: Cross multiply
    1,440,209.68x = 1,987,546.20 × 828,361.46
  4. Step 4: Simplify right side
    1,440,209.68x = 1,646,406,672,049.45
  5. Step 5: Solve for x
    x = 1,646,406,672,049.45/1,440,209.68
  6. Step 6: Final answer
    x = 1,143,171.51

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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.