Finding the Fourth Proportional to 4,128,121.20, 6,192,181.80 and 2,868,409.20
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Solution
The fourth proportional to 4,128,121.20, 6,192,181.80 and 2,868,409.20 is: 4,302,613.80
Step by Step Solution
- Step 1: Write the proportion equation
4,128,121.20 : 6,192,181.80 = 2,868,409.20 : x - Step 2: Convert to fraction form
4,128,121.20/6,192,181.80 = 2,868,409.20/x - Step 3: Cross multiply
4,128,121.20x = 6,192,181.80 × 2,868,409.20 - Step 4: Simplify right side
4,128,121.20x = 17,761,711,243,192.56 - Step 5: Solve for x
x = 17,761,711,243,192.56/4,128,121.20 - Step 6: Final answer
x = 4,302,613.80
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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.