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Finding the Fourth Proportional to 612,455.52, 845,193.84 and 397,676.64

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Solution

The fourth proportional to 612,455.52, 845,193.84 and 397,676.64 is: 548,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,455.52 : 845,193.84 = 397,676.64 : x
  2. Step 2: Convert to fraction form
    612,455.52/845,193.84 = 397,676.64/x
  3. Step 3: Cross multiply
    612,455.52x = 845,193.84 × 397,676.64
  4. Step 4: Simplify right side
    612,455.52x = 336,113,846,439.90
  5. Step 5: Solve for x
    x = 336,113,846,439.90/612,455.52
  6. Step 6: Final answer
    x = 548,797.15

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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.