Finding the Fourth Proportional to 1,129,583.40, 1,558,835.92 and 620,296.44
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Solution
The fourth proportional to 1,129,583.40, 1,558,835.92 and 620,296.44 is: 856,015.03
Step by Step Solution
- Step 1: Write the proportion equation
1,129,583.40 : 1,558,835.92 = 620,296.44 : x - Step 2: Convert to fraction form
1,129,583.40/1,558,835.92 = 620,296.44/x - Step 3: Cross multiply
1,129,583.40x = 1,558,835.92 × 620,296.44 - Step 4: Simplify right side
1,129,583.40x = 966,940,371,720.13 - Step 5: Solve for x
x = 966,940,371,720.13/1,129,583.40 - Step 6: Final answer
x = 856,015.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.