Finding the Fourth Proportional to 7,620,902.28, 11,415,160.17 and 5,160,413.07
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Solution
The fourth proportional to 7,620,902.28, 11,415,160.17 and 5,160,413.07 is: 7,729,654.52
Step by Step Solution
- Step 1: Write the proportion equation
7,620,902.28 : 11,415,160.17 = 5,160,413.07 : x - Step 2: Convert to fraction form
7,620,902.28/11,415,160.17 = 5,160,413.07/x - Step 3: Cross multiply
7,620,902.28x = 11,415,160.17 × 5,160,413.07 - Step 4: Simplify right side
7,620,902.28x = 58,906,941,737,411.42 - Step 5: Solve for x
x = 58,906,941,737,411.42/7,620,902.28 - Step 6: Final answer
x = 7,729,654.52
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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.