Home / 1,261,620.39-1,890,493.32-856,286.13

Finding the Fourth Proportional to 1,261,620.39, 1,890,493.32 and 856,286.13

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Solution

The fourth proportional to 1,261,620.39, 1,890,493.32 and 856,286.13 is: 1,283,114.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,620.39 : 1,890,493.32 = 856,286.13 : x
  2. Step 2: Convert to fraction form
    1,261,620.39/1,890,493.32 = 856,286.13/x
  3. Step 3: Cross multiply
    1,261,620.39x = 1,890,493.32 × 856,286.13
  4. Step 4: Simplify right side
    1,261,620.39x = 1,618,803,208,773.65
  5. Step 5: Solve for x
    x = 1,618,803,208,773.65/1,261,620.39
  6. Step 6: Final answer
    x = 1,283,114.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.