Home / 1,557,436.20-2,149,257.93-869,100.78

Finding the Fourth Proportional to 1,557,436.20, 2,149,257.93 and 869,100.78

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Solution

The fourth proportional to 1,557,436.20, 2,149,257.93 and 869,100.78 is: 1,199,356.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,436.20 : 2,149,257.93 = 869,100.78 : x
  2. Step 2: Convert to fraction form
    1,557,436.20/2,149,257.93 = 869,100.78/x
  3. Step 3: Cross multiply
    1,557,436.20x = 2,149,257.93 × 869,100.78
  4. Step 4: Simplify right side
    1,557,436.20x = 1,867,921,743,384.19
  5. Step 5: Solve for x
    x = 1,867,921,743,384.19/1,557,436.20
  6. Step 6: Final answer
    x = 1,199,356.83

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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.