Home / 1,387,611.32-1,914,202.29-928,745.12

Finding the Fourth Proportional to 1,387,611.32, 1,914,202.29 and 928,745.12

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Solution

The fourth proportional to 1,387,611.32, 1,914,202.29 and 928,745.12 is: 1,281,198.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,611.32 : 1,914,202.29 = 928,745.12 : x
  2. Step 2: Convert to fraction form
    1,387,611.32/1,914,202.29 = 928,745.12/x
  3. Step 3: Cross multiply
    1,387,611.32x = 1,914,202.29 × 928,745.12
  4. Step 4: Simplify right side
    1,387,611.32x = 1,777,806,035,530.32
  5. Step 5: Solve for x
    x = 1,777,806,035,530.32/1,387,611.32
  6. Step 6: Final answer
    x = 1,281,198.86

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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.