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Finding the Fourth Proportional to 422,611.11, 634,706.42 and 372,028.23

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Solution

The fourth proportional to 422,611.11, 634,706.42 and 372,028.23 is: 558,737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,611.11 : 634,706.42 = 372,028.23 : x
  2. Step 2: Convert to fraction form
    422,611.11/634,706.42 = 372,028.23/x
  3. Step 3: Cross multiply
    422,611.11x = 634,706.42 × 372,028.23
  4. Step 4: Simplify right side
    422,611.11x = 236,128,704,142.10
  5. Step 5: Solve for x
    x = 236,128,704,142.10/422,611.11
  6. Step 6: Final answer
    x = 558,737.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.