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Finding the Fourth Proportional to 620,578.36, 930,849 and 171,326.64

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Solution

The fourth proportional to 620,578.36, 930,849 and 171,326.64 is: 256,984.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,578.36 : 930,849 = 171,326.64 : x
  2. Step 2: Convert to fraction form
    620,578.36/930,849 = 171,326.64/x
  3. Step 3: Cross multiply
    620,578.36x = 930,849 × 171,326.64
  4. Step 4: Simplify right side
    620,578.36x = 159,479,231,517.36
  5. Step 5: Solve for x
    x = 159,479,231,517.36/620,578.36
  6. Step 6: Final answer
    x = 256,984.84

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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.