Home / 1,040,578.02-1,561,015.78-320,980.50

Finding the Fourth Proportional to 1,040,578.02, 1,561,015.78 and 320,980.50

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Solution

The fourth proportional to 1,040,578.02, 1,561,015.78 and 320,980.50 is: 481,516.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,578.02 : 1,561,015.78 = 320,980.50 : x
  2. Step 2: Convert to fraction form
    1,040,578.02/1,561,015.78 = 320,980.50/x
  3. Step 3: Cross multiply
    1,040,578.02x = 1,561,015.78 × 320,980.50
  4. Step 4: Simplify right side
    1,040,578.02x = 501,055,625,572.29
  5. Step 5: Solve for x
    x = 501,055,625,572.29/1,040,578.02
  6. Step 6: Final answer
    x = 481,516.63

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1.5x scale

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.