Home / 1,188,208.80-1,782,313.20-389,297.70

Finding the Fourth Proportional to 1,188,208.80, 1,782,313.20 and 389,297.70

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Solution

The fourth proportional to 1,188,208.80, 1,782,313.20 and 389,297.70 is: 583,946.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,208.80 : 1,782,313.20 = 389,297.70 : x
  2. Step 2: Convert to fraction form
    1,188,208.80/1,782,313.20 = 389,297.70/x
  3. Step 3: Cross multiply
    1,188,208.80x = 1,782,313.20 × 389,297.70
  4. Step 4: Simplify right side
    1,188,208.80x = 693,850,429,439.64
  5. Step 5: Solve for x
    x = 693,850,429,439.64/1,188,208.80
  6. Step 6: Final answer
    x = 583,946.55

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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.