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Finding the Fourth Proportional to 456,400.20, 684,600.30 and 449,401.80

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Solution

The fourth proportional to 456,400.20, 684,600.30 and 449,401.80 is: 674,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,400.20 : 684,600.30 = 449,401.80 : x
  2. Step 2: Convert to fraction form
    456,400.20/684,600.30 = 449,401.80/x
  3. Step 3: Cross multiply
    456,400.20x = 684,600.30 × 449,401.80
  4. Step 4: Simplify right side
    456,400.20x = 307,660,607,100.54
  5. Step 5: Solve for x
    x = 307,660,607,100.54/456,400.20
  6. Step 6: Final answer
    x = 674,102.70

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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.