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Finding the Fourth Proportional to 612,449.52, 845,185.56 and 397,670.64

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Solution

The fourth proportional to 612,449.52, 845,185.56 and 397,670.64 is: 548,788.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,449.52 : 845,185.56 = 397,670.64 : x
  2. Step 2: Convert to fraction form
    612,449.52/845,185.56 = 397,670.64/x
  3. Step 3: Cross multiply
    612,449.52x = 845,185.56 × 397,670.64
  4. Step 4: Simplify right side
    612,449.52x = 336,105,482,563.96
  5. Step 5: Solve for x
    x = 336,105,482,563.96/612,449.52
  6. Step 6: Final answer
    x = 548,788.87

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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.