Finding the Fourth Proportional to 6,245,814.40, 9,368,721.60 and 1,986,413.20
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Solution
The fourth proportional to 6,245,814.40, 9,368,721.60 and 1,986,413.20 is: 2,979,619.80
Step by Step Solution
- Step 1: Write the proportion equation
6,245,814.40 : 9,368,721.60 = 1,986,413.20 : x - Step 2: Convert to fraction form
6,245,814.40/9,368,721.60 = 1,986,413.20/x - Step 3: Cross multiply
6,245,814.40x = 9,368,721.60 × 1,986,413.20 - Step 4: Simplify right side
6,245,814.40x = 18,610,152,253,365.12 - Step 5: Solve for x
x = 18,610,152,253,365.12/6,245,814.40 - Step 6: Final answer
x = 2,979,619.80
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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.