Home / 1,261,117.84-1,891,976.86-408,189.48

Finding the Fourth Proportional to 1,261,117.84, 1,891,976.86 and 408,189.48

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Solution

The fourth proportional to 1,261,117.84, 1,891,976.86 and 408,189.48 is: 612,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,117.84 : 1,891,976.86 = 408,189.48 : x
  2. Step 2: Convert to fraction form
    1,261,117.84/1,891,976.86 = 408,189.48/x
  3. Step 3: Cross multiply
    1,261,117.84x = 1,891,976.86 × 408,189.48
  4. Step 4: Simplify right side
    1,261,117.84x = 772,285,050,655.43
  5. Step 5: Solve for x
    x = 772,285,050,655.43/1,261,117.84
  6. Step 6: Final answer
    x = 612,381.35

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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.