Home / 1,320,675.20-1,981,012.80-323,403.20

Finding the Fourth Proportional to 1,320,675.20, 1,981,012.80 and 323,403.20

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Solution

The fourth proportional to 1,320,675.20, 1,981,012.80 and 323,403.20 is: 485,104.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,675.20 : 1,981,012.80 = 323,403.20 : x
  2. Step 2: Convert to fraction form
    1,320,675.20/1,981,012.80 = 323,403.20/x
  3. Step 3: Cross multiply
    1,320,675.20x = 1,981,012.80 × 323,403.20
  4. Step 4: Simplify right side
    1,320,675.20x = 640,665,878,760.96
  5. Step 5: Solve for x
    x = 640,665,878,760.96/1,320,675.20
  6. Step 6: Final answer
    x = 485,104.80

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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.