Finding the Fourth Proportional to 878,879.40, 1,318,319.10 and 405,424.68
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Solution
The fourth proportional to 878,879.40, 1,318,319.10 and 405,424.68 is: 608,137.02
Step by Step Solution
- Step 1: Write the proportion equation
878,879.40 : 1,318,319.10 = 405,424.68 : x - Step 2: Convert to fraction form
878,879.40/1,318,319.10 = 405,424.68/x - Step 3: Cross multiply
878,879.40x = 1,318,319.10 × 405,424.68 - Step 4: Simplify right side
878,879.40x = 534,479,099,255.39 - Step 5: Solve for x
x = 534,479,099,255.39/878,879.40 - Step 6: Final answer
x = 608,137.02
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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.