Finding the Fourth Proportional to 879,487.20, 1,319,230.80 and 214,639.20
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Solution
The fourth proportional to 879,487.20, 1,319,230.80 and 214,639.20 is: 321,958.80
Step by Step Solution
- Step 1: Write the proportion equation
879,487.20 : 1,319,230.80 = 214,639.20 : x - Step 2: Convert to fraction form
879,487.20/1,319,230.80 = 214,639.20/x - Step 3: Cross multiply
879,487.20x = 1,319,230.80 × 214,639.20 - Step 4: Simplify right side
879,487.20x = 283,158,643,527.36 - Step 5: Solve for x
x = 283,158,643,527.36/879,487.20 - Step 6: Final answer
x = 321,958.80
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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.