Finding the Fourth Proportional to 856,405.75, 1,284,559.21 and 257,354.05
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Solution
The fourth proportional to 856,405.75, 1,284,559.21 and 257,354.05 is: 386,016.23
Step by Step Solution
- Step 1: Write the proportion equation
856,405.75 : 1,284,559.21 = 257,354.05 : x - Step 2: Convert to fraction form
856,405.75/1,284,559.21 = 257,354.05/x - Step 3: Cross multiply
856,405.75x = 1,284,559.21 × 257,354.05 - Step 4: Simplify right side
856,405.75x = 330,586,515,158.30 - Step 5: Solve for x
x = 330,586,515,158.30/856,405.75 - Step 6: Final answer
x = 386,016.23
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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.