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Finding the Fourth Proportional to 613,839.68, 920,757.48 and 276,485.44

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Solution

The fourth proportional to 613,839.68, 920,757.48 and 276,485.44 is: 414,727.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,839.68 : 920,757.48 = 276,485.44 : x
  2. Step 2: Convert to fraction form
    613,839.68/920,757.48 = 276,485.44/x
  3. Step 3: Cross multiply
    613,839.68x = 920,757.48 × 276,485.44
  4. Step 4: Simplify right side
    613,839.68x = 254,576,036,991.09
  5. Step 5: Solve for x
    x = 254,576,036,991.09/613,839.68
  6. Step 6: Final answer
    x = 414,727.24

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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.