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Finding the Fourth Proportional to 612,716.52, 845,489.56 and 354,541.98

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Solution

The fourth proportional to 612,716.52, 845,489.56 and 354,541.98 is: 489,233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,716.52 : 845,489.56 = 354,541.98 : x
  2. Step 2: Convert to fraction form
    612,716.52/845,489.56 = 354,541.98/x
  3. Step 3: Cross multiply
    612,716.52x = 845,489.56 × 354,541.98
  4. Step 4: Simplify right side
    612,716.52x = 299,761,542,671.73
  5. Step 5: Solve for x
    x = 299,761,542,671.73/612,716.52
  6. Step 6: Final answer
    x = 489,233.66

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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.