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Finding the Fourth Proportional to 494,460.80, 743,246.40 and 485,129.60

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Solution

The fourth proportional to 494,460.80, 743,246.40 and 485,129.60 is: 729,220.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,460.80 : 743,246.40 = 485,129.60 : x
  2. Step 2: Convert to fraction form
    494,460.80/743,246.40 = 485,129.60/x
  3. Step 3: Cross multiply
    494,460.80x = 743,246.40 × 485,129.60
  4. Step 4: Simplify right side
    494,460.80x = 360,570,828,733.44
  5. Step 5: Solve for x
    x = 360,570,828,733.44/494,460.80
  6. Step 6: Final answer
    x = 729,220.25

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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.