Home / 920,268.80-1,380,477.02-321,216.69

Finding the Fourth Proportional to 920,268.80, 1,380,477.02 and 321,216.69

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Solution

The fourth proportional to 920,268.80, 1,380,477.02 and 321,216.69 is: 481,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,268.80 : 1,380,477.02 = 321,216.69 : x
  2. Step 2: Convert to fraction form
    920,268.80/1,380,477.02 = 321,216.69/x
  3. Step 3: Cross multiply
    920,268.80x = 1,380,477.02 × 321,216.69
  4. Step 4: Simplify right side
    920,268.80x = 443,432,257,379.38
  5. Step 5: Solve for x
    x = 443,432,257,379.38/920,268.80
  6. Step 6: Final answer
    x = 481,850.80

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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.