Home / 1,259,310.05-1,889,523.44-660,128.21

Finding the Fourth Proportional to 1,259,310.05, 1,889,523.44 and 660,128.21

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Solution

The fourth proportional to 1,259,310.05, 1,889,523.44 and 660,128.21 is: 990,485.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,310.05 : 1,889,523.44 = 660,128.21 : x
  2. Step 2: Convert to fraction form
    1,259,310.05/1,889,523.44 = 660,128.21/x
  3. Step 3: Cross multiply
    1,259,310.05x = 1,889,523.44 × 660,128.21
  4. Step 4: Simplify right side
    1,259,310.05x = 1,247,327,722,899.60
  5. Step 5: Solve for x
    x = 1,247,327,722,899.60/1,259,310.05
  6. Step 6: Final answer
    x = 990,485.01

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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.