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Finding the Fourth Proportional to 619,384.54, 854,574.92 and 361,272.74

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Solution

The fourth proportional to 619,384.54, 854,574.92 and 361,272.74 is: 498,453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,384.54 : 854,574.92 = 361,272.74 : x
  2. Step 2: Convert to fraction form
    619,384.54/854,574.92 = 361,272.74/x
  3. Step 3: Cross multiply
    619,384.54x = 854,574.92 × 361,272.74
  4. Step 4: Simplify right side
    619,384.54x = 308,734,622,883.68
  5. Step 5: Solve for x
    x = 308,734,622,883.68/619,384.54
  6. Step 6: Final answer
    x = 498,453.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.