Finding the Fourth Proportional to 665,581.62, 918,396.45 and 379,107.30
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Solution
The fourth proportional to 665,581.62, 918,396.45 and 379,107.30 is: 523,107.59
Step by Step Solution
- Step 1: Write the proportion equation
665,581.62 : 918,396.45 = 379,107.30 : x - Step 2: Convert to fraction form
665,581.62/918,396.45 = 379,107.30/x - Step 3: Cross multiply
665,581.62x = 918,396.45 × 379,107.30 - Step 4: Simplify right side
665,581.62x = 348,170,798,489.09 - Step 5: Solve for x
x = 348,170,798,489.09/665,581.62 - Step 6: Final answer
x = 523,107.59
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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.