Home / 2,118,149-2,921,033.94-1,393,611.56

Finding the Fourth Proportional to 2,118,149, 2,921,033.94 and 1,393,611.56

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Solution

The fourth proportional to 2,118,149, 2,921,033.94 and 1,393,611.56 is: 1,921,860.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,149 : 2,921,033.94 = 1,393,611.56 : x
  2. Step 2: Convert to fraction form
    2,118,149/2,921,033.94 = 1,393,611.56/x
  3. Step 3: Cross multiply
    2,118,149x = 2,921,033.94 × 1,393,611.56
  4. Step 4: Simplify right side
    2,118,149x = 4,070,786,665,936.35
  5. Step 5: Solve for x
    x = 4,070,786,665,936.35/2,118,149
  6. Step 6: Final answer
    x = 1,921,860.39

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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.