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Finding the Fourth Proportional to 647,520.45, 970,726.86 and 248,447.64

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Solution

The fourth proportional to 647,520.45, 970,726.86 and 248,447.64 is: 372,458.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,520.45 : 970,726.86 = 248,447.64 : x
  2. Step 2: Convert to fraction form
    647,520.45/970,726.86 = 248,447.64/x
  3. Step 3: Cross multiply
    647,520.45x = 970,726.86 × 248,447.64
  4. Step 4: Simplify right side
    647,520.45x = 241,174,797,451.61
  5. Step 5: Solve for x
    x = 241,174,797,451.61/647,520.45
  6. Step 6: Final answer
    x = 372,458.97

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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.