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Finding the Fourth Proportional to 445,496.40, 668,244.60 and 440,830.80

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Solution

The fourth proportional to 445,496.40, 668,244.60 and 440,830.80 is: 661,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,496.40 : 668,244.60 = 440,830.80 : x
  2. Step 2: Convert to fraction form
    445,496.40/668,244.60 = 440,830.80/x
  3. Step 3: Cross multiply
    445,496.40x = 668,244.60 × 440,830.80
  4. Step 4: Simplify right side
    445,496.40x = 294,582,801,613.68
  5. Step 5: Solve for x
    x = 294,582,801,613.68/445,496.40
  6. Step 6: Final answer
    x = 661,246.20

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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.