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Finding the Fourth Proportional to 445,452.60, 666,234.90 and 398,407.80

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Solution

The fourth proportional to 445,452.60, 666,234.90 and 398,407.80 is: 595,873.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,452.60 : 666,234.90 = 398,407.80 : x
  2. Step 2: Convert to fraction form
    445,452.60/666,234.90 = 398,407.80/x
  3. Step 3: Cross multiply
    445,452.60x = 666,234.90 × 398,407.80
  4. Step 4: Simplify right side
    445,452.60x = 265,433,180,792.22
  5. Step 5: Solve for x
    x = 265,433,180,792.22/445,452.60
  6. Step 6: Final answer
    x = 595,873.01

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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.