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Finding the Fourth Proportional to 647,252.56, 970,879.52 and 349,625.55

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Solution

The fourth proportional to 647,252.56, 970,879.52 and 349,625.55 is: 524,438.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,252.56 : 970,879.52 = 349,625.55 : x
  2. Step 2: Convert to fraction form
    647,252.56/970,879.52 = 349,625.55/x
  3. Step 3: Cross multiply
    647,252.56x = 970,879.52 × 349,625.55
  4. Step 4: Simplify right side
    647,252.56x = 339,444,286,163.74
  5. Step 5: Solve for x
    x = 339,444,286,163.74/647,252.56
  6. Step 6: Final answer
    x = 524,438.69

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Double scale
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Similar ratio
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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.