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Finding the Fourth Proportional to 674,240.75, 1,011,400 and 253,520.27

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Solution

The fourth proportional to 674,240.75, 1,011,400 and 253,520.27 is: 380,295.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,240.75 : 1,011,400 = 253,520.27 : x
  2. Step 2: Convert to fraction form
    674,240.75/1,011,400 = 253,520.27/x
  3. Step 3: Cross multiply
    674,240.75x = 1,011,400 × 253,520.27
  4. Step 4: Simplify right side
    674,240.75x = 256,410,401,078
  5. Step 5: Solve for x
    x = 256,410,401,078/674,240.75
  6. Step 6: Final answer
    x = 380,295.02

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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.