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Finding the Fourth Proportional to 400,813, 600,694.62 and 223,403.56

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Solution

The fourth proportional to 400,813, 600,694.62 and 223,403.56 is: 334,812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,813 : 600,694.62 = 223,403.56 : x
  2. Step 2: Convert to fraction form
    400,813/600,694.62 = 223,403.56/x
  3. Step 3: Cross multiply
    400,813x = 600,694.62 × 223,403.56
  4. Step 4: Simplify right side
    400,813x = 134,197,316,580.85
  5. Step 5: Solve for x
    x = 134,197,316,580.85/400,813
  6. Step 6: Final answer
    x = 334,812.78

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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.