Finding the Fourth Proportional to 660,431,968.09, 990,648,136.71 and 194,093,367.21
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Solution
The fourth proportional to 660,431,968.09, 990,648,136.71 and 194,093,367.21 is: 291,140,105.06
Step by Step Solution
- Step 1: Write the proportion equation
660,431,968.09 : 990,648,136.71 = 194,093,367.21 : x - Step 2: Convert to fraction form
660,431,968.09/990,648,136.71 = 194,093,367.21/x - Step 3: Cross multiply
660,431,968.09x = 990,648,136.71 × 194,093,367.21 - Step 4: Simplify right side
660,431,968.09x = 192,278,232,574,356,320 - Step 5: Solve for x
x = 192,278,232,574,356,320/660,431,968.09 - Step 6: Final answer
x = 291,140,105.06
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.