Home / 1,389,238.20-2,082,690.90-724,390.20

Finding the Fourth Proportional to 1,389,238.20, 2,082,690.90 and 724,390.20

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Solution

The fourth proportional to 1,389,238.20, 2,082,690.90 and 724,390.20 is: 1,085,977.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,238.20 : 2,082,690.90 = 724,390.20 : x
  2. Step 2: Convert to fraction form
    1,389,238.20/2,082,690.90 = 724,390.20/x
  3. Step 3: Cross multiply
    1,389,238.20x = 2,082,690.90 × 724,390.20
  4. Step 4: Simplify right side
    1,389,238.20x = 1,508,680,877,589.18
  5. Step 5: Solve for x
    x = 1,508,680,877,589.18/1,389,238.20
  6. Step 6: Final answer
    x = 1,085,977.10

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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.