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Finding the Fourth Proportional to 554,007.58, 764,591.21 and 321,485.74

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Solution

The fourth proportional to 554,007.58, 764,591.21 and 321,485.74 is: 443,685.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,007.58 : 764,591.21 = 321,485.74 : x
  2. Step 2: Convert to fraction form
    554,007.58/764,591.21 = 321,485.74/x
  3. Step 3: Cross multiply
    554,007.58x = 764,591.21 × 321,485.74
  4. Step 4: Simplify right side
    554,007.58x = 245,805,173,659.54
  5. Step 5: Solve for x
    x = 245,805,173,659.54/554,007.58
  6. Step 6: Final answer
    x = 443,685.58

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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.