Home / 1,261,081.81-1,891,922.87-408,153.48

Finding the Fourth Proportional to 1,261,081.81, 1,891,922.87 and 408,153.48

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Solution

The fourth proportional to 1,261,081.81, 1,891,922.87 and 408,153.48 is: 612,327.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,081.81 : 1,891,922.87 = 408,153.48 : x
  2. Step 2: Convert to fraction form
    1,261,081.81/1,891,922.87 = 408,153.48/x
  3. Step 3: Cross multiply
    1,261,081.81x = 1,891,922.87 × 408,153.48
  4. Step 4: Simplify right side
    1,261,081.81x = 772,194,907,849.83
  5. Step 5: Solve for x
    x = 772,194,907,849.83/1,261,081.81
  6. Step 6: Final answer
    x = 612,327.37

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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.