Finding the Fourth Proportional to 479,482.64, 661,771.75 and 285,902.81
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Solution
The fourth proportional to 479,482.64, 661,771.75 and 285,902.81 is: 394,596.99
Step by Step Solution
- Step 1: Write the proportion equation
479,482.64 : 661,771.75 = 285,902.81 : x - Step 2: Convert to fraction form
479,482.64/661,771.75 = 285,902.81/x - Step 3: Cross multiply
479,482.64x = 661,771.75 × 285,902.81 - Step 4: Simplify right side
479,482.64x = 189,202,404,816.08 - Step 5: Solve for x
x = 189,202,404,816.08/479,482.64 - Step 6: Final answer
x = 394,596.99
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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.