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Finding the Fourth Proportional to 449,767.56, 620,619.24 and 288,840.60

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Solution

The fourth proportional to 449,767.56, 620,619.24 and 288,840.60 is: 398,561.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,767.56 : 620,619.24 = 288,840.60 : x
  2. Step 2: Convert to fraction form
    449,767.56/620,619.24 = 288,840.60/x
  3. Step 3: Cross multiply
    449,767.56x = 620,619.24 × 288,840.60
  4. Step 4: Simplify right side
    449,767.56x = 179,260,033,653.14
  5. Step 5: Solve for x
    x = 179,260,033,653.14/449,767.56
  6. Step 6: Final answer
    x = 398,561.50

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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.