Finding the Fourth Proportional to 667,689.44, 921,381.36 and 365,876.96
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Solution
The fourth proportional to 667,689.44, 921,381.36 and 365,876.96 is: 504,893.73
Step by Step Solution
- Step 1: Write the proportion equation
667,689.44 : 921,381.36 = 365,876.96 : x - Step 2: Convert to fraction form
667,689.44/921,381.36 = 365,876.96/x - Step 3: Cross multiply
667,689.44x = 921,381.36 × 365,876.96 - Step 4: Simplify right side
667,689.44x = 337,112,210,997.47 - Step 5: Solve for x
x = 337,112,210,997.47/667,689.44 - Step 6: Final answer
x = 504,893.73
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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.