Home / 1,320,218.40-1,981,105.20-872,234.40

Finding the Fourth Proportional to 1,320,218.40, 1,981,105.20 and 872,234.40

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Solution

The fourth proportional to 1,320,218.40, 1,981,105.20 and 872,234.40 is: 1,308,865.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,218.40 : 1,981,105.20 = 872,234.40 : x
  2. Step 2: Convert to fraction form
    1,320,218.40/1,981,105.20 = 872,234.40/x
  3. Step 3: Cross multiply
    1,320,218.40x = 1,981,105.20 × 872,234.40
  4. Step 4: Simplify right side
    1,320,218.40x = 1,727,988,105,458.88
  5. Step 5: Solve for x
    x = 1,727,988,105,458.88/1,320,218.40
  6. Step 6: Final answer
    x = 1,308,865.34

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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.