Home / 1,621,191.78-2,236,084.38-1,137,864.78

Finding the Fourth Proportional to 1,621,191.78, 2,236,084.38 and 1,137,864.78

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Solution

The fourth proportional to 1,621,191.78, 2,236,084.38 and 1,137,864.78 is: 1,569,439.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621,191.78 : 2,236,084.38 = 1,137,864.78 : x
  2. Step 2: Convert to fraction form
    1,621,191.78/2,236,084.38 = 1,137,864.78/x
  3. Step 3: Cross multiply
    1,621,191.78x = 2,236,084.38 × 1,137,864.78
  4. Step 4: Simplify right side
    1,621,191.78x = 2,544,361,661,110.14
  5. Step 5: Solve for x
    x = 2,544,361,661,110.14/1,621,191.78
  6. Step 6: Final answer
    x = 1,569,439.03

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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.