Home / 1,280,618.88-1,921,003.38-481,907.31

Finding the Fourth Proportional to 1,280,618.88, 1,921,003.38 and 481,907.31

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Solution

The fourth proportional to 1,280,618.88, 1,921,003.38 and 481,907.31 is: 722,889.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,618.88 : 1,921,003.38 = 481,907.31 : x
  2. Step 2: Convert to fraction form
    1,280,618.88/1,921,003.38 = 481,907.31/x
  3. Step 3: Cross multiply
    1,280,618.88x = 1,921,003.38 × 481,907.31
  4. Step 4: Simplify right side
    1,280,618.88x = 925,745,571,356.71
  5. Step 5: Solve for x
    x = 925,745,571,356.71/1,280,618.88
  6. Step 6: Final answer
    x = 722,889.21

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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.