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Finding the Fourth Proportional to 503,878.40, 755,380.20 and 303,986.60

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Solution

The fourth proportional to 503,878.40, 755,380.20 and 303,986.60 is: 455,716.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,878.40 : 755,380.20 = 303,986.60 : x
  2. Step 2: Convert to fraction form
    503,878.40/755,380.20 = 303,986.60/x
  3. Step 3: Cross multiply
    503,878.40x = 755,380.20 × 303,986.60
  4. Step 4: Simplify right side
    503,878.40x = 229,625,458,705.32
  5. Step 5: Solve for x
    x = 229,625,458,705.32/503,878.40
  6. Step 6: Final answer
    x = 455,716.02

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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.