Finding the Fourth Proportional to 959,381.68, 1,438,821.84 and 285,281.60
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Solution
The fourth proportional to 959,381.68, 1,438,821.84 and 285,281.60 is: 427,847.86
Step by Step Solution
- Step 1: Write the proportion equation
959,381.68 : 1,438,821.84 = 285,281.60 : x - Step 2: Convert to fraction form
959,381.68/1,438,821.84 = 285,281.60/x - Step 3: Cross multiply
959,381.68x = 1,438,821.84 × 285,281.60 - Step 4: Simplify right side
959,381.68x = 410,469,396,630.14 - Step 5: Solve for x
x = 410,469,396,630.14/959,381.68 - Step 6: Final answer
x = 427,847.86
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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.