Finding the Fourth Proportional to 665,825.64, 918,876.18 and 379,290.84
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Solution
The fourth proportional to 665,825.64, 918,876.18 and 379,290.84 is: 523,442.32
Step by Step Solution
- Step 1: Write the proportion equation
665,825.64 : 918,876.18 = 379,290.84 : x - Step 2: Convert to fraction form
665,825.64/918,876.18 = 379,290.84/x - Step 3: Cross multiply
665,825.64x = 918,876.18 × 379,290.84 - Step 4: Simplify right side
665,825.64x = 348,521,318,168.19 - Step 5: Solve for x
x = 348,521,318,168.19/665,825.64 - Step 6: Final answer
x = 523,442.32
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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.