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Finding the Fourth Proportional to 1,079,194.40, 1,619,245.20 and 579,975.20

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Solution

The fourth proportional to 1,079,194.40, 1,619,245.20 and 579,975.20 is: 870,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079,194.40 : 1,619,245.20 = 579,975.20 : x
  2. Step 2: Convert to fraction form
    1,079,194.40/1,619,245.20 = 579,975.20/x
  3. Step 3: Cross multiply
    1,079,194.40x = 1,619,245.20 × 579,975.20
  4. Step 4: Simplify right side
    1,079,194.40x = 939,122,058,719.04
  5. Step 5: Solve for x
    x = 939,122,058,719.04/1,079,194.40
  6. Step 6: Final answer
    x = 870,206.57

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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.