Finding the Fourth Proportional to 389,006,544.78, 582,574,835.97 and 222,505,277.13
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Solution
The fourth proportional to 389,006,544.78, 582,574,835.97 and 222,505,277.13 is: 333,223,121.99
Step by Step Solution
- Step 1: Write the proportion equation
389,006,544.78 : 582,574,835.97 = 222,505,277.13 : x - Step 2: Convert to fraction form
389,006,544.78/582,574,835.97 = 222,505,277.13/x - Step 3: Cross multiply
389,006,544.78x = 582,574,835.97 × 222,505,277.13 - Step 4: Simplify right side
389,006,544.78x = 129,625,975,326,469,152 - Step 5: Solve for x
x = 129,625,975,326,469,152/389,006,544.78 - Step 6: Final answer
x = 333,223,121.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.