Home / 422,943.58-634,404.81-123,426.74

Finding the Fourth Proportional to 422,943.58, 634,404.81 and 123,426.74

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Solution

The fourth proportional to 422,943.58, 634,404.81 and 123,426.74 is: 185,137.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,943.58 : 634,404.81 = 123,426.74 : x
  2. Step 2: Convert to fraction form
    422,943.58/634,404.81 = 123,426.74/x
  3. Step 3: Cross multiply
    422,943.58x = 634,404.81 × 123,426.74
  4. Step 4: Simplify right side
    422,943.58x = 78,302,517,538.62
  5. Step 5: Solve for x
    x = 78,302,517,538.62/422,943.58
  6. Step 6: Final answer
    x = 185,137.03

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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.