Home / 1,188,190.20-1,782,722.70-389,497.80

Finding the Fourth Proportional to 1,188,190.20, 1,782,722.70 and 389,497.80

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Solution

The fourth proportional to 1,188,190.20, 1,782,722.70 and 389,497.80 is: 584,390.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,190.20 : 1,782,722.70 = 389,497.80 : x
  2. Step 2: Convert to fraction form
    1,188,190.20/1,782,722.70 = 389,497.80/x
  3. Step 3: Cross multiply
    1,188,190.20x = 1,782,722.70 × 389,497.80
  4. Step 4: Simplify right side
    1,188,190.20x = 694,366,569,660.06
  5. Step 5: Solve for x
    x = 694,366,569,660.06/1,188,190.20
  6. Step 6: Final answer
    x = 584,390.08

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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.