Finding the Fourth Proportional to 1,138,969.75, 1,571,811.06 and 629,704.93
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Solution
The fourth proportional to 1,138,969.75, 1,571,811.06 and 629,704.93 is: 869,010.94
Step by Step Solution
- Step 1: Write the proportion equation
1,138,969.75 : 1,571,811.06 = 629,704.93 : x - Step 2: Convert to fraction form
1,138,969.75/1,571,811.06 = 629,704.93/x - Step 3: Cross multiply
1,138,969.75x = 1,571,811.06 × 629,704.93 - Step 4: Simplify right side
1,138,969.75x = 989,777,173,510.53 - Step 5: Solve for x
x = 989,777,173,510.53/1,138,969.75 - Step 6: Final answer
x = 869,010.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.