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Finding the Fourth Proportional to 431,784.64, 595,659.44 and 280,826.56

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Solution

The fourth proportional to 431,784.64, 595,659.44 and 280,826.56 is: 387,408.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,784.64 : 595,659.44 = 280,826.56 : x
  2. Step 2: Convert to fraction form
    431,784.64/595,659.44 = 280,826.56/x
  3. Step 3: Cross multiply
    431,784.64x = 595,659.44 × 280,826.56
  4. Step 4: Simplify right side
    431,784.64x = 167,276,991,466.73
  5. Step 5: Solve for x
    x = 167,276,991,466.73/431,784.64
  6. Step 6: Final answer
    x = 387,408.39

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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.