Finding the Fourth Proportional to 12,785,413.91, 19,177,989.62 and 7,390,631.66
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Solution
The fourth proportional to 12,785,413.91, 19,177,989.62 and 7,390,631.66 is: 11,085,871.62
Step by Step Solution
- Step 1: Write the proportion equation
12,785,413.91 : 19,177,989.62 = 7,390,631.66 : x - Step 2: Convert to fraction form
12,785,413.91/19,177,989.62 = 7,390,631.66/x - Step 3: Cross multiply
12,785,413.91x = 19,177,989.62 × 7,390,631.66 - Step 4: Simplify right side
12,785,413.91x = 141,737,457,260,723.38 - Step 5: Solve for x
x = 141,737,457,260,723.38/12,785,413.91 - Step 6: Final answer
x = 11,085,871.62
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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.