Home / 1,389,325.20-2,082,821.40-724,477.20

Finding the Fourth Proportional to 1,389,325.20, 2,082,821.40 and 724,477.20

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Solution

The fourth proportional to 1,389,325.20, 2,082,821.40 and 724,477.20 is: 1,086,107.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,325.20 : 2,082,821.40 = 724,477.20 : x
  2. Step 2: Convert to fraction form
    1,389,325.20/2,082,821.40 = 724,477.20/x
  3. Step 3: Cross multiply
    1,389,325.20x = 2,082,821.40 × 724,477.20
  4. Step 4: Simplify right side
    1,389,325.20x = 1,508,956,615,972.08
  5. Step 5: Solve for x
    x = 1,508,956,615,972.08/1,389,325.20
  6. Step 6: Final answer
    x = 1,086,107.57

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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.