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Finding the Fourth Proportional to 624,728.64, 862,072.44 and 366,578.88

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Solution

The fourth proportional to 624,728.64, 862,072.44 and 366,578.88 is: 505,847.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,728.64 : 862,072.44 = 366,578.88 : x
  2. Step 2: Convert to fraction form
    624,728.64/862,072.44 = 366,578.88/x
  3. Step 3: Cross multiply
    624,728.64x = 862,072.44 × 366,578.88
  4. Step 4: Simplify right side
    624,728.64x = 316,017,549,534.07
  5. Step 5: Solve for x
    x = 316,017,549,534.07/624,728.64
  6. Step 6: Final answer
    x = 505,847.71

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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.