Home / 726,775.20-1,002,942.48-404,480.16

Finding the Fourth Proportional to 726,775.20, 1,002,942.48 and 404,480.16

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Solution

The fourth proportional to 726,775.20, 1,002,942.48 and 404,480.16 is: 558,178.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,775.20 : 1,002,942.48 = 404,480.16 : x
  2. Step 2: Convert to fraction form
    726,775.20/1,002,942.48 = 404,480.16/x
  3. Step 3: Cross multiply
    726,775.20x = 1,002,942.48 × 404,480.16
  4. Step 4: Simplify right side
    726,775.20x = 405,670,334,781.20
  5. Step 5: Solve for x
    x = 405,670,334,781.20/726,775.20
  6. Step 6: Final answer
    x = 558,178.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.