Finding the Fourth Proportional to 831,138.62, 1,246,778.64 and 262,367.55
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Solution
The fourth proportional to 831,138.62, 1,246,778.64 and 262,367.55 is: 393,573.65
Step by Step Solution
- Step 1: Write the proportion equation
831,138.62 : 1,246,778.64 = 262,367.55 : x - Step 2: Convert to fraction form
831,138.62/1,246,778.64 = 262,367.55/x - Step 3: Cross multiply
831,138.62x = 1,246,778.64 × 262,367.55 - Step 4: Simplify right side
831,138.62x = 327,114,257,169.13 - Step 5: Solve for x
x = 327,114,257,169.13/831,138.62 - Step 6: Final answer
x = 393,573.65
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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.