Home / 1,389,188.70-2,082,616.65-724,340.70

Finding the Fourth Proportional to 1,389,188.70, 2,082,616.65 and 724,340.70

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Solution

The fourth proportional to 1,389,188.70, 2,082,616.65 and 724,340.70 is: 1,085,902.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,188.70 : 2,082,616.65 = 724,340.70 : x
  2. Step 2: Convert to fraction form
    1,389,188.70/2,082,616.65 = 724,340.70/x
  3. Step 3: Cross multiply
    1,389,188.70x = 2,082,616.65 × 724,340.70
  4. Step 4: Simplify right side
    1,389,188.70x = 1,508,524,002,092.65
  5. Step 5: Solve for x
    x = 1,508,524,002,092.65/1,389,188.70
  6. Step 6: Final answer
    x = 1,085,902.87

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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.