Finding the Fourth Proportional to 665,620.14, 918,453.15 and 379,103.70
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Solution
The fourth proportional to 665,620.14, 918,453.15 and 379,103.70 is: 523,104.65
Step by Step Solution
- Step 1: Write the proportion equation
665,620.14 : 918,453.15 = 379,103.70 : x - Step 2: Convert to fraction form
665,620.14/918,453.15 = 379,103.70/x - Step 3: Cross multiply
665,620.14x = 918,453.15 × 379,103.70 - Step 4: Simplify right side
665,620.14x = 348,188,987,441.66 - Step 5: Solve for x
x = 348,188,987,441.66/665,620.14 - Step 6: Final answer
x = 523,104.65
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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.