Finding the Fourth Proportional to 7,151,971.09, 9,869,651.55 and 3,888,786.97
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Solution
The fourth proportional to 7,151,971.09, 9,869,651.55 and 3,888,786.97 is: 5,366,488.74
Step by Step Solution
- Step 1: Write the proportion equation
7,151,971.09 : 9,869,651.55 = 3,888,786.97 : x - Step 2: Convert to fraction form
7,151,971.09/9,869,651.55 = 3,888,786.97/x - Step 3: Cross multiply
7,151,971.09x = 9,869,651.55 × 3,888,786.97 - Step 4: Simplify right side
7,151,971.09x = 38,380,972,302,900.59 - Step 5: Solve for x
x = 38,380,972,302,900.59/7,151,971.09 - Step 6: Final answer
x = 5,366,488.74
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1.5x scale
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.