Finding the Fourth Proportional to 18,439,240.80, 27,658,861.20 and 6,471,976.80
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Solution
The fourth proportional to 18,439,240.80, 27,658,861.20 and 6,471,976.80 is: 9,707,965.20
Step by Step Solution
- Step 1: Write the proportion equation
18,439,240.80 : 27,658,861.20 = 6,471,976.80 : x - Step 2: Convert to fraction form
18,439,240.80/27,658,861.20 = 6,471,976.80/x - Step 3: Cross multiply
18,439,240.80x = 27,658,861.20 × 6,471,976.80 - Step 4: Simplify right side
18,439,240.80x = 179,007,508,000,820.16 - Step 5: Solve for x
x = 179,007,508,000,820.16/18,439,240.80 - Step 6: Final answer
x = 9,707,965.20
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1.5x scale
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.