Home / 2,185,120.80-3,015,479.34-1,218,311.28

Finding the Fourth Proportional to 2,185,120.80, 3,015,479.34 and 1,218,311.28

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Solution

The fourth proportional to 2,185,120.80, 3,015,479.34 and 1,218,311.28 is: 1,681,276.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185,120.80 : 3,015,479.34 = 1,218,311.28 : x
  2. Step 2: Convert to fraction form
    2,185,120.80/3,015,479.34 = 1,218,311.28/x
  3. Step 3: Cross multiply
    2,185,120.80x = 3,015,479.34 × 1,218,311.28
  4. Step 4: Simplify right side
    2,185,120.80x = 3,673,792,494,528.96
  5. Step 5: Solve for x
    x = 3,673,792,494,528.96/2,185,120.80
  6. Step 6: Final answer
    x = 1,681,276.61

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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.