Finding the Fourth Proportional to 1,288,413.16, 1,932,857.34 and 423,896.68
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Solution
The fourth proportional to 1,288,413.16, 1,932,857.34 and 423,896.68 is: 635,923.19
Step by Step Solution
- Step 1: Write the proportion equation
1,288,413.16 : 1,932,857.34 = 423,896.68 : x - Step 2: Convert to fraction form
1,288,413.16/1,932,857.34 = 423,896.68/x - Step 3: Cross multiply
1,288,413.16x = 1,932,857.34 × 423,896.68 - Step 4: Simplify right side
1,288,413.16x = 819,331,809,339.63 - Step 5: Solve for x
x = 819,331,809,339.63/1,288,413.16 - Step 6: Final answer
x = 635,923.19
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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.