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Finding the Fourth Proportional to 494,461.80, 743,247.90 and 485,130.60

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Solution

The fourth proportional to 494,461.80, 743,247.90 and 485,130.60 is: 729,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,461.80 : 743,247.90 = 485,130.60 : x
  2. Step 2: Convert to fraction form
    494,461.80/743,247.90 = 485,130.60/x
  3. Step 3: Cross multiply
    494,461.80x = 743,247.90 × 485,130.60
  4. Step 4: Simplify right side
    494,461.80x = 360,572,299,675.74
  5. Step 5: Solve for x
    x = 360,572,299,675.74/494,461.80
  6. Step 6: Final answer
    x = 729,221.75

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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.