Finding the Fourth Proportional to 1,705,511,136.15, 2,557,879,954.37 and 772,217,868.99
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Solution
The fourth proportional to 1,705,511,136.15, 2,557,879,954.37 and 772,217,868.99 is: 1,158,151,691.67
Step by Step Solution
- Step 1: Write the proportion equation
1,705,511,136.15 : 2,557,879,954.37 = 772,217,868.99 : x - Step 2: Convert to fraction form
1,705,511,136.15/2,557,879,954.37 = 772,217,868.99/x - Step 3: Cross multiply
1,705,511,136.15x = 2,557,879,954.37 × 772,217,868.99 - Step 4: Simplify right side
1,705,511,136.15x = 1,975,240,607,491,978,496 - Step 5: Solve for x
x = 1,975,240,607,491,978,496/1,705,511,136.15 - Step 6: Final answer
x = 1,158,151,691.67
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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.