Finding the Fourth Proportional to 500,687.68, 691,013.28 and 285,778.48
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Solution
The fourth proportional to 500,687.68, 691,013.28 and 285,778.48 is: 394,410.99
Step by Step Solution
- Step 1: Write the proportion equation
500,687.68 : 691,013.28 = 285,778.48 : x - Step 2: Convert to fraction form
500,687.68/691,013.28 = 285,778.48/x - Step 3: Cross multiply
500,687.68x = 691,013.28 × 285,778.48 - Step 4: Simplify right side
500,687.68x = 197,476,724,818.21 - Step 5: Solve for x
x = 197,476,724,818.21/500,687.68 - Step 6: Final answer
x = 394,410.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.