Home / 2,120,022-2,925,630.36-1,215,128.88

Finding the Fourth Proportional to 2,120,022, 2,925,630.36 and 1,215,128.88

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Solution

The fourth proportional to 2,120,022, 2,925,630.36 and 1,215,128.88 is: 1,676,877.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,022 : 2,925,630.36 = 1,215,128.88 : x
  2. Step 2: Convert to fraction form
    2,120,022/2,925,630.36 = 1,215,128.88/x
  3. Step 3: Cross multiply
    2,120,022x = 2,925,630.36 × 1,215,128.88
  4. Step 4: Simplify right side
    2,120,022x = 3,555,017,942,640.80
  5. Step 5: Solve for x
    x = 3,555,017,942,640.80/2,120,022
  6. Step 6: Final answer
    x = 1,676,877.85

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1.5x scale

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.