Home / 1,320,629.76-1,981,906.56-479,249.28

Finding the Fourth Proportional to 1,320,629.76, 1,981,906.56 and 479,249.28

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Solution

The fourth proportional to 1,320,629.76, 1,981,906.56 and 479,249.28 is: 719,223.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,629.76 : 1,981,906.56 = 479,249.28 : x
  2. Step 2: Convert to fraction form
    1,320,629.76/1,981,906.56 = 479,249.28/x
  3. Step 3: Cross multiply
    1,320,629.76x = 1,981,906.56 × 479,249.28
  4. Step 4: Simplify right side
    1,320,629.76x = 949,827,291,907.28
  5. Step 5: Solve for x
    x = 949,827,291,907.28/1,320,629.76
  6. Step 6: Final answer
    x = 719,223.00

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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.