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Finding the Fourth Proportional to 747,969.60, 1,121,608.80 and 327,028.80

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Solution

The fourth proportional to 747,969.60, 1,121,608.80 and 327,028.80 is: 490,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,969.60 : 1,121,608.80 = 327,028.80 : x
  2. Step 2: Convert to fraction form
    747,969.60/1,121,608.80 = 327,028.80/x
  3. Step 3: Cross multiply
    747,969.60x = 1,121,608.80 × 327,028.80
  4. Step 4: Simplify right side
    747,969.60x = 366,798,379,933.44
  5. Step 5: Solve for x
    x = 366,798,379,933.44/747,969.60
  6. Step 6: Final answer
    x = 490,392.10

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1.5x scale

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.