Home / 1,320,686.80-1,981,030.20-323,414.80

Finding the Fourth Proportional to 1,320,686.80, 1,981,030.20 and 323,414.80

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Solution

The fourth proportional to 1,320,686.80, 1,981,030.20 and 323,414.80 is: 485,122.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,686.80 : 1,981,030.20 = 323,414.80 : x
  2. Step 2: Convert to fraction form
    1,320,686.80/1,981,030.20 = 323,414.80/x
  3. Step 3: Cross multiply
    1,320,686.80x = 1,981,030.20 × 323,414.80
  4. Step 4: Simplify right side
    1,320,686.80x = 640,694,485,926.96
  5. Step 5: Solve for x
    x = 640,694,485,926.96/1,320,686.80
  6. Step 6: Final answer
    x = 485,122.20

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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.