Home / 1,299,407.78-1,949,389.82-388,661.69

Finding the Fourth Proportional to 1,299,407.78, 1,949,389.82 and 388,661.69

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Solution

The fourth proportional to 1,299,407.78, 1,949,389.82 and 388,661.69 is: 583,075.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,407.78 : 1,949,389.82 = 388,661.69 : x
  2. Step 2: Convert to fraction form
    1,299,407.78/1,949,389.82 = 388,661.69/x
  3. Step 3: Cross multiply
    1,299,407.78x = 1,949,389.82 × 388,661.69
  4. Step 4: Simplify right side
    1,299,407.78x = 757,653,141,910.00
  5. Step 5: Solve for x
    x = 757,653,141,910.00/1,299,407.78
  6. Step 6: Final answer
    x = 583,075.73

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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.