Finding the Fourth Proportional to 7,782,821.40, 11,658,485.70 and 5,389,368.60
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Solution
The fourth proportional to 7,782,821.40, 11,658,485.70 and 5,389,368.60 is: 8,073,148.99
Step by Step Solution
- Step 1: Write the proportion equation
7,782,821.40 : 11,658,485.70 = 5,389,368.60 : x - Step 2: Convert to fraction form
7,782,821.40/11,658,485.70 = 5,389,368.60/x - Step 3: Cross multiply
7,782,821.40x = 11,658,485.70 × 5,389,368.60 - Step 4: Simplify right side
7,782,821.40x = 62,831,876,755,129.01 - Step 5: Solve for x
x = 62,831,876,755,129.01/7,782,821.40 - Step 6: Final answer
x = 8,073,148.99
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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.