Finding the Fourth Proportional to 1,207,106.20, 1,810,659.30 and 408,413.80
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Solution
The fourth proportional to 1,207,106.20, 1,810,659.30 and 408,413.80 is: 612,620.70
Step by Step Solution
- Step 1: Write the proportion equation
1,207,106.20 : 1,810,659.30 = 408,413.80 : x - Step 2: Convert to fraction form
1,207,106.20/1,810,659.30 = 408,413.80/x - Step 3: Cross multiply
1,207,106.20x = 1,810,659.30 × 408,413.80 - Step 4: Simplify right side
1,207,106.20x = 739,498,245,218.34 - Step 5: Solve for x
x = 739,498,245,218.34/1,207,106.20 - Step 6: Final answer
x = 612,620.70
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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.