Home / 1,299,406.78-1,949,388.32-388,660.69

Finding the Fourth Proportional to 1,299,406.78, 1,949,388.32 and 388,660.69

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Solution

The fourth proportional to 1,299,406.78, 1,949,388.32 and 388,660.69 is: 583,074.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,406.78 : 1,949,388.32 = 388,660.69 : x
  2. Step 2: Convert to fraction form
    1,299,406.78/1,949,388.32 = 388,660.69/x
  3. Step 3: Cross multiply
    1,299,406.78x = 1,949,388.32 × 388,660.69
  4. Step 4: Simplify right side
    1,299,406.78x = 757,650,605,627.32
  5. Step 5: Solve for x
    x = 757,650,605,627.32/1,299,406.78
  6. Step 6: Final answer
    x = 583,074.23

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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.