Home / 1,328,577.91-1,993,183.21-430,019.80

Finding the Fourth Proportional to 1,328,577.91, 1,993,183.21 and 430,019.80

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Solution

The fourth proportional to 1,328,577.91, 1,993,183.21 and 430,019.80 is: 645,132.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,577.91 : 1,993,183.21 = 430,019.80 : x
  2. Step 2: Convert to fraction form
    1,328,577.91/1,993,183.21 = 430,019.80/x
  3. Step 3: Cross multiply
    1,328,577.91x = 1,993,183.21 × 430,019.80
  4. Step 4: Simplify right side
    1,328,577.91x = 857,108,245,327.56
  5. Step 5: Solve for x
    x = 857,108,245,327.56/1,328,577.91
  6. Step 6: Final answer
    x = 645,132.09

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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.