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Finding the Fourth Proportional to 498,400.40, 747,600.60 and 299,334.80

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Solution

The fourth proportional to 498,400.40, 747,600.60 and 299,334.80 is: 449,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,400.40 : 747,600.60 = 299,334.80 : x
  2. Step 2: Convert to fraction form
    498,400.40/747,600.60 = 299,334.80/x
  3. Step 3: Cross multiply
    498,400.40x = 747,600.60 × 299,334.80
  4. Step 4: Simplify right side
    498,400.40x = 223,782,876,080.88
  5. Step 5: Solve for x
    x = 223,782,876,080.88/498,400.40
  6. Step 6: Final answer
    x = 449,002.20

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1.5x scale

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.