Home / 1,188,202.80-1,782,304.20-991,372.80

Finding the Fourth Proportional to 1,188,202.80, 1,782,304.20 and 991,372.80

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Solution

The fourth proportional to 1,188,202.80, 1,782,304.20 and 991,372.80 is: 1,487,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,202.80 : 1,782,304.20 = 991,372.80 : x
  2. Step 2: Convert to fraction form
    1,188,202.80/1,782,304.20 = 991,372.80/x
  3. Step 3: Cross multiply
    1,188,202.80x = 1,782,304.20 × 991,372.80
  4. Step 4: Simplify right side
    1,188,202.80x = 1,766,927,905,205.76
  5. Step 5: Solve for x
    x = 1,766,927,905,205.76/1,188,202.80
  6. Step 6: Final answer
    x = 1,487,059.20

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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.