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Finding the Fourth Proportional to 459,611.88, 634,218.84 and 287,496.60

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Solution

The fourth proportional to 459,611.88, 634,218.84 and 287,496.60 is: 396,716.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,611.88 : 634,218.84 = 287,496.60 : x
  2. Step 2: Convert to fraction form
    459,611.88/634,218.84 = 287,496.60/x
  3. Step 3: Cross multiply
    459,611.88x = 634,218.84 × 287,496.60
  4. Step 4: Simplify right side
    459,611.88x = 182,335,760,155.94
  5. Step 5: Solve for x
    x = 182,335,760,155.94/459,611.88
  6. Step 6: Final answer
    x = 396,716.81

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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.