Finding the Fourth Proportional to 528,350,982.25, 729,133,136.87 and 290,218,185.53
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Solution
The fourth proportional to 528,350,982.25, 729,133,136.87 and 290,218,185.53 is: 400,505,919.55
Step by Step Solution
- Step 1: Write the proportion equation
528,350,982.25 : 729,133,136.87 = 290,218,185.53 : x - Step 2: Convert to fraction form
528,350,982.25/729,133,136.87 = 290,218,185.53/x - Step 3: Cross multiply
528,350,982.25x = 729,133,136.87 × 290,218,185.53 - Step 4: Simplify right side
528,350,982.25x = 211,607,695,989,846,048 - Step 5: Solve for x
x = 211,607,695,989,846,048/528,350,982.25 - Step 6: Final answer
x = 400,505,919.55
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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.