Home / 1,389,171.20-2,082,590.40-724,323.20

Finding the Fourth Proportional to 1,389,171.20, 2,082,590.40 and 724,323.20

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Solution

The fourth proportional to 1,389,171.20, 2,082,590.40 and 724,323.20 is: 1,085,876.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,171.20 : 2,082,590.40 = 724,323.20 : x
  2. Step 2: Convert to fraction form
    1,389,171.20/2,082,590.40 = 724,323.20/x
  3. Step 3: Cross multiply
    1,389,171.20x = 2,082,590.40 × 724,323.20
  4. Step 4: Simplify right side
    1,389,171.20x = 1,508,468,542,817.28
  5. Step 5: Solve for x
    x = 1,508,468,542,817.28/1,389,171.20
  6. Step 6: Final answer
    x = 1,085,876.63

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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.