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Finding the Fourth Proportional to 638,236.72, 880,801.32 and 366,302.44

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Solution

The fourth proportional to 638,236.72, 880,801.32 and 366,302.44 is: 505,517.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,236.72 : 880,801.32 = 366,302.44 : x
  2. Step 2: Convert to fraction form
    638,236.72/880,801.32 = 366,302.44/x
  3. Step 3: Cross multiply
    638,236.72x = 880,801.32 × 366,302.44
  4. Step 4: Simplify right side
    638,236.72x = 322,639,672,671.22
  5. Step 5: Solve for x
    x = 322,639,672,671.22/638,236.72
  6. Step 6: Final answer
    x = 505,517.25

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Double scale
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1.5x scale

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.