Home / 818,650.53-1,228,107.02-345,405.60

Finding the Fourth Proportional to 818,650.53, 1,228,107.02 and 345,405.60

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Solution

The fourth proportional to 818,650.53, 1,228,107.02 and 345,405.60 is: 518,163.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,650.53 : 1,228,107.02 = 345,405.60 : x
  2. Step 2: Convert to fraction form
    818,650.53/1,228,107.02 = 345,405.60/x
  3. Step 3: Cross multiply
    818,650.53x = 1,228,107.02 × 345,405.60
  4. Step 4: Simplify right side
    818,650.53x = 424,195,040,380.28
  5. Step 5: Solve for x
    x = 424,195,040,380.28/818,650.53
  6. Step 6: Final answer
    x = 518,163.76

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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.