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Finding the Fourth Proportional to 554,035.62, 764,858.24 and 393,274.72

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Solution

The fourth proportional to 554,035.62, 764,858.24 and 393,274.72 is: 542,924.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,035.62 : 764,858.24 = 393,274.72 : x
  2. Step 2: Convert to fraction form
    554,035.62/764,858.24 = 393,274.72/x
  3. Step 3: Cross multiply
    554,035.62x = 764,858.24 × 393,274.72
  4. Step 4: Simplify right side
    554,035.62x = 300,799,410,175.69
  5. Step 5: Solve for x
    x = 300,799,410,175.69/554,035.62
  6. Step 6: Final answer
    x = 542,924.32

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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.