Finding the Fourth Proportional to 1,206,821.60, 1,810,121.76 and 408,110.08
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Solution
The fourth proportional to 1,206,821.60, 1,810,121.76 and 408,110.08 is: 612,127.70
Step by Step Solution
- Step 1: Write the proportion equation
1,206,821.60 : 1,810,121.76 = 408,110.08 : x - Step 2: Convert to fraction form
1,206,821.60/1,810,121.76 = 408,110.08/x - Step 3: Cross multiply
1,206,821.60x = 1,810,121.76 × 408,110.08 - Step 4: Simplify right side
1,206,821.60x = 738,728,936,283.34 - Step 5: Solve for x
x = 738,728,936,283.34/1,206,821.60 - Step 6: Final answer
x = 612,127.70
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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.