Home / 1,188,230.70-1,782,783.45-389,538.30

Finding the Fourth Proportional to 1,188,230.70, 1,782,783.45 and 389,538.30

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Solution

The fourth proportional to 1,188,230.70, 1,782,783.45 and 389,538.30 is: 584,450.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,230.70 : 1,782,783.45 = 389,538.30 : x
  2. Step 2: Convert to fraction form
    1,188,230.70/1,782,783.45 = 389,538.30/x
  3. Step 3: Cross multiply
    1,188,230.70x = 1,782,783.45 × 389,538.30
  4. Step 4: Simplify right side
    1,188,230.70x = 694,462,434,381.14
  5. Step 5: Solve for x
    x = 694,462,434,381.14/1,188,230.70
  6. Step 6: Final answer
    x = 584,450.84

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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.