Finding the Fourth Proportional to 385,716.06, 578,063.79 and 279,457.02
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Solution
The fourth proportional to 385,716.06, 578,063.79 and 279,457.02 is: 418,815.81
Step by Step Solution
- Step 1: Write the proportion equation
385,716.06 : 578,063.79 = 279,457.02 : x - Step 2: Convert to fraction form
385,716.06/578,063.79 = 279,457.02/x - Step 3: Cross multiply
385,716.06x = 578,063.79 × 279,457.02 - Step 4: Simplify right side
385,716.06x = 161,543,984,123.31 - Step 5: Solve for x
x = 161,543,984,123.31/385,716.06 - Step 6: Final answer
x = 418,815.81
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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.