Finding the Fourth Proportional to 809,442.40, 1,214,163.60 and 389,538.40
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Solution
The fourth proportional to 809,442.40, 1,214,163.60 and 389,538.40 is: 584,307.60
Step by Step Solution
- Step 1: Write the proportion equation
809,442.40 : 1,214,163.60 = 389,538.40 : x - Step 2: Convert to fraction form
809,442.40/1,214,163.60 = 389,538.40/x - Step 3: Cross multiply
809,442.40x = 1,214,163.60 × 389,538.40 - Step 4: Simplify right side
809,442.40x = 472,963,346,082.24 - Step 5: Solve for x
x = 472,963,346,082.24/809,442.40 - Step 6: Final answer
x = 584,307.60
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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.