Finding the Fourth Proportional to 393,362,413.36, 542,825,901.92 and 217,146,626.08
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Solution
The fourth proportional to 393,362,413.36, 542,825,901.92 and 217,146,626.08 is: 299,654,489.47
Step by Step Solution
- Step 1: Write the proportion equation
393,362,413.36 : 542,825,901.92 = 217,146,626.08 : x - Step 2: Convert to fraction form
393,362,413.36/542,825,901.92 = 217,146,626.08/x - Step 3: Cross multiply
393,362,413.36x = 542,825,901.92 × 217,146,626.08 - Step 4: Simplify right side
393,362,413.36x = 117,872,813,150,760,992 - Step 5: Solve for x
x = 117,872,813,150,760,992/393,362,413.36 - Step 6: Final answer
x = 299,654,489.47
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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.