Finding the Fourth Proportional to 757,712.72, 1,136,782.31 and 331,285.99
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Solution
The fourth proportional to 757,712.72, 1,136,782.31 and 331,285.99 is: 497,022.21
Step by Step Solution
- Step 1: Write the proportion equation
757,712.72 : 1,136,782.31 = 331,285.99 : x - Step 2: Convert to fraction form
757,712.72/1,136,782.31 = 331,285.99/x - Step 3: Cross multiply
757,712.72x = 1,136,782.31 × 331,285.99 - Step 4: Simplify right side
757,712.72x = 376,600,052,982.84 - Step 5: Solve for x
x = 376,600,052,982.84/757,712.72 - Step 6: Final answer
x = 497,022.21
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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.