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Finding the Fourth Proportional to 554,243.22, 764,840.46 and 312,523.86

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Solution

The fourth proportional to 554,243.22, 764,840.46 and 312,523.86 is: 431,274.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,243.22 : 764,840.46 = 312,523.86 : x
  2. Step 2: Convert to fraction form
    554,243.22/764,840.46 = 312,523.86/x
  3. Step 3: Cross multiply
    554,243.22x = 764,840.46 × 312,523.86
  4. Step 4: Simplify right side
    554,243.22x = 239,030,892,843.38
  5. Step 5: Solve for x
    x = 239,030,892,843.38/554,243.22
  6. Step 6: Final answer
    x = 431,274.37

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1.5x scale

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.