Finding the Fourth Proportional to 13,332,448.80, 18,398,687.76 and 7,220,737.44
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Solution
The fourth proportional to 13,332,448.80, 18,398,687.76 and 7,220,737.44 is: 9,964,568.07
Step by Step Solution
- Step 1: Write the proportion equation
13,332,448.80 : 18,398,687.76 = 7,220,737.44 : x - Step 2: Convert to fraction form
13,332,448.80/18,398,687.76 = 7,220,737.44/x - Step 3: Cross multiply
13,332,448.80x = 18,398,687.76 × 7,220,737.44 - Step 4: Simplify right side
13,332,448.80x = 132,852,093,555,501.75 - Step 5: Solve for x
x = 132,852,093,555,501.75/13,332,448.80 - Step 6: Final answer
x = 9,964,568.07
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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.