Finding the Fourth Proportional to 445,771.68, 664,024.44 and 421,626.72
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Solution
The fourth proportional to 445,771.68, 664,024.44 and 421,626.72 is: 628,057.95
Step by Step Solution
- Step 1: Write the proportion equation
445,771.68 : 664,024.44 = 421,626.72 : x - Step 2: Convert to fraction form
445,771.68/664,024.44 = 421,626.72/x - Step 3: Cross multiply
445,771.68x = 664,024.44 × 421,626.72 - Step 4: Simplify right side
445,771.68x = 279,970,446,637.04 - Step 5: Solve for x
x = 279,970,446,637.04/445,771.68 - Step 6: Final answer
x = 628,057.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.