Home / 1,981,058.20-2,733,870.40-1,121,785.90

Finding the Fourth Proportional to 1,981,058.20, 2,733,870.40 and 1,121,785.90

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Solution

The fourth proportional to 1,981,058.20, 2,733,870.40 and 1,121,785.90 is: 1,548,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981,058.20 : 2,733,870.40 = 1,121,785.90 : x
  2. Step 2: Convert to fraction form
    1,981,058.20/2,733,870.40 = 1,121,785.90/x
  3. Step 3: Cross multiply
    1,981,058.20x = 2,733,870.40 × 1,121,785.90
  4. Step 4: Simplify right side
    1,981,058.20x = 3,066,817,257,508.22
  5. Step 5: Solve for x
    x = 3,066,817,257,508.22/1,981,058.20
  6. Step 6: Final answer
    x = 1,548,070.25

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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.