Home / 1,311,023.80-1,965,733.80-511,383.70

Finding the Fourth Proportional to 1,311,023.80, 1,965,733.80 and 511,383.70

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Solution

The fourth proportional to 1,311,023.80, 1,965,733.80 and 511,383.70 is: 766,762.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,023.80 : 1,965,733.80 = 511,383.70 : x
  2. Step 2: Convert to fraction form
    1,311,023.80/1,965,733.80 = 511,383.70/x
  3. Step 3: Cross multiply
    1,311,023.80x = 1,965,733.80 × 511,383.70
  4. Step 4: Simplify right side
    1,311,023.80x = 1,005,244,223,859.06
  5. Step 5: Solve for x
    x = 1,005,244,223,859.06/1,311,023.80
  6. Step 6: Final answer
    x = 766,762.76

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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.