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Finding the Fourth Proportional to 422,431.76, 634,976.24 and 366,962.61

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Solution

The fourth proportional to 422,431.76, 634,976.24 and 366,962.61 is: 551,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,431.76 : 634,976.24 = 366,962.61 : x
  2. Step 2: Convert to fraction form
    422,431.76/634,976.24 = 366,962.61/x
  3. Step 3: Cross multiply
    422,431.76x = 634,976.24 × 366,962.61
  4. Step 4: Simplify right side
    422,431.76x = 233,012,536,603.37
  5. Step 5: Solve for x
    x = 233,012,536,603.37/422,431.76
  6. Step 6: Final answer
    x = 551,598.05

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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.