Home / 724,939.20-1,087,408.80-659,620.80

Finding the Fourth Proportional to 724,939.20, 1,087,408.80 and 659,620.80

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Solution

The fourth proportional to 724,939.20, 1,087,408.80 and 659,620.80 is: 989,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,939.20 : 1,087,408.80 = 659,620.80 : x
  2. Step 2: Convert to fraction form
    724,939.20/1,087,408.80 = 659,620.80/x
  3. Step 3: Cross multiply
    724,939.20x = 1,087,408.80 × 659,620.80
  4. Step 4: Simplify right side
    724,939.20x = 717,277,462,583.04
  5. Step 5: Solve for x
    x = 717,277,462,583.04/724,939.20
  6. Step 6: Final answer
    x = 989,431.20

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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.