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Finding the Fourth Proportional to 449,200.40, 673,800.60 and 412,458.80

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Solution

The fourth proportional to 449,200.40, 673,800.60 and 412,458.80 is: 618,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,200.40 : 673,800.60 = 412,458.80 : x
  2. Step 2: Convert to fraction form
    449,200.40/673,800.60 = 412,458.80/x
  3. Step 3: Cross multiply
    449,200.40x = 673,800.60 × 412,458.80
  4. Step 4: Simplify right side
    449,200.40x = 277,914,986,915.28
  5. Step 5: Solve for x
    x = 277,914,986,915.28/449,200.40
  6. Step 6: Final answer
    x = 618,688.20

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Similar ratio
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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.