Home / 1,261,119.84-1,891,979.86-408,191.48

Finding the Fourth Proportional to 1,261,119.84, 1,891,979.86 and 408,191.48

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Solution

The fourth proportional to 1,261,119.84, 1,891,979.86 and 408,191.48 is: 612,384.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,119.84 : 1,891,979.86 = 408,191.48 : x
  2. Step 2: Convert to fraction form
    1,261,119.84/1,891,979.86 = 408,191.48/x
  3. Step 3: Cross multiply
    1,261,119.84x = 1,891,979.86 × 408,191.48
  4. Step 4: Simplify right side
    1,261,119.84x = 772,290,059,183.59
  5. Step 5: Solve for x
    x = 772,290,059,183.59/1,261,119.84
  6. Step 6: Final answer
    x = 612,384.35

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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.