Finding the Fourth Proportional to 839,138.20, 1,158,007.26 and 457,163.80
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Solution
The fourth proportional to 839,138.20, 1,158,007.26 and 457,163.80 is: 630,884.16
Step by Step Solution
- Step 1: Write the proportion equation
839,138.20 : 1,158,007.26 = 457,163.80 : x - Step 2: Convert to fraction form
839,138.20/1,158,007.26 = 457,163.80/x - Step 3: Cross multiply
839,138.20x = 1,158,007.26 × 457,163.80 - Step 4: Simplify right side
839,138.20x = 529,398,999,409.19 - Step 5: Solve for x
x = 529,398,999,409.19/839,138.20 - Step 6: Final answer
x = 630,884.16
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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.