Home / 2,990,906.80-4,480,042.20-1,980,512.80

Finding the Fourth Proportional to 2,990,906.80, 4,480,042.20 and 1,980,512.80

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Solution

The fourth proportional to 2,990,906.80, 4,480,042.20 and 1,980,512.80 is: 2,966,585.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,906.80 : 4,480,042.20 = 1,980,512.80 : x
  2. Step 2: Convert to fraction form
    2,990,906.80/4,480,042.20 = 1,980,512.80/x
  3. Step 3: Cross multiply
    2,990,906.80x = 4,480,042.20 × 1,980,512.80
  4. Step 4: Simplify right side
    2,990,906.80x = 8,872,780,921,640.16
  5. Step 5: Solve for x
    x = 8,872,780,921,640.16/2,990,906.80
  6. Step 6: Final answer
    x = 2,966,585.56

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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.