Home / 1,990,718.12-2,747,485.93-1,216,794.86

Finding the Fourth Proportional to 1,990,718.12, 2,747,485.93 and 1,216,794.86

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Solution

The fourth proportional to 1,990,718.12, 2,747,485.93 and 1,216,794.86 is: 1,679,357.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,718.12 : 2,747,485.93 = 1,216,794.86 : x
  2. Step 2: Convert to fraction form
    1,990,718.12/2,747,485.93 = 1,216,794.86/x
  3. Step 3: Cross multiply
    1,990,718.12x = 2,747,485.93 × 1,216,794.86
  4. Step 4: Simplify right side
    1,990,718.12x = 3,343,126,753,351.47
  5. Step 5: Solve for x
    x = 3,343,126,753,351.47/1,990,718.12
  6. Step 6: Final answer
    x = 1,679,357.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.