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Finding the Fourth Proportional to 400,794.40, 600,025.20 and 354,138.40

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Solution

The fourth proportional to 400,794.40, 600,025.20 and 354,138.40 is: 530,176.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,794.40 : 600,025.20 = 354,138.40 : x
  2. Step 2: Convert to fraction form
    400,794.40/600,025.20 = 354,138.40/x
  3. Step 3: Cross multiply
    400,794.40x = 600,025.20 × 354,138.40
  4. Step 4: Simplify right side
    400,794.40x = 212,491,964,287.68
  5. Step 5: Solve for x
    x = 212,491,964,287.68/400,794.40
  6. Step 6: Final answer
    x = 530,176.98

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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.