Home / 853,889.57-1,280,812.30-277,509.63

Finding the Fourth Proportional to 853,889.57, 1,280,812.30 and 277,509.63

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Solution

The fourth proportional to 853,889.57, 1,280,812.30 and 277,509.63 is: 416,257.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,889.57 : 1,280,812.30 = 277,509.63 : x
  2. Step 2: Convert to fraction form
    853,889.57/1,280,812.30 = 277,509.63/x
  3. Step 3: Cross multiply
    853,889.57x = 1,280,812.30 × 277,509.63
  4. Step 4: Simplify right side
    853,889.57x = 355,437,741,975.63
  5. Step 5: Solve for x
    x = 355,437,741,975.63/853,889.57
  6. Step 6: Final answer
    x = 416,257.27

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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.