Finding the Fourth Proportional to 643,315.20, 964,975.28 and 269,075.68
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Solution
The fourth proportional to 643,315.20, 964,975.28 and 269,075.68 is: 403,614.56
Step by Step Solution
- Step 1: Write the proportion equation
643,315.20 : 964,975.28 = 269,075.68 : x - Step 2: Convert to fraction form
643,315.20/964,975.28 = 269,075.68/x - Step 3: Cross multiply
643,315.20x = 964,975.28 × 269,075.68 - Step 4: Simplify right side
643,315.20x = 259,651,379,649.19 - Step 5: Solve for x
x = 259,651,379,649.19/643,315.20 - Step 6: Final answer
x = 403,614.56
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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.