Home / 1,328,782.80-1,993,490.98-430,224.81

Finding the Fourth Proportional to 1,328,782.80, 1,993,490.98 and 430,224.81

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Solution

The fourth proportional to 1,328,782.80, 1,993,490.98 and 430,224.81 is: 645,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,782.80 : 1,993,490.98 = 430,224.81 : x
  2. Step 2: Convert to fraction form
    1,328,782.80/1,993,490.98 = 430,224.81/x
  3. Step 3: Cross multiply
    1,328,782.80x = 1,993,490.98 × 430,224.81
  4. Step 4: Simplify right side
    1,328,782.80x = 857,649,278,107.21
  5. Step 5: Solve for x
    x = 857,649,278,107.21/1,328,782.80
  6. Step 6: Final answer
    x = 645,439.78

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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.