Home / 1,261,115.84-1,891,973.86-408,187.48

Finding the Fourth Proportional to 1,261,115.84, 1,891,973.86 and 408,187.48

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Solution

The fourth proportional to 1,261,115.84, 1,891,973.86 and 408,187.48 is: 612,378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,115.84 : 1,891,973.86 = 408,187.48 : x
  2. Step 2: Convert to fraction form
    1,261,115.84/1,891,973.86 = 408,187.48/x
  3. Step 3: Cross multiply
    1,261,115.84x = 1,891,973.86 × 408,187.48
  4. Step 4: Simplify right side
    1,261,115.84x = 772,280,042,139.27
  5. Step 5: Solve for x
    x = 772,280,042,139.27/1,261,115.84
  6. Step 6: Final answer
    x = 612,378.35

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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.