Finding the Fourth Proportional to 879,243.26, 1,213,369.47 and 516,715.20
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Solution
The fourth proportional to 879,243.26, 1,213,369.47 and 516,715.20 is: 713,075.07
Step by Step Solution
- Step 1: Write the proportion equation
879,243.26 : 1,213,369.47 = 516,715.20 : x - Step 2: Convert to fraction form
879,243.26/1,213,369.47 = 516,715.20/x - Step 3: Cross multiply
879,243.26x = 1,213,369.47 × 516,715.20 - Step 4: Simplify right side
879,243.26x = 626,966,448,364.94 - Step 5: Solve for x
x = 626,966,448,364.94/879,243.26 - Step 6: Final answer
x = 713,075.07
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1.5x scale
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.