Finding the Fourth Proportional to 990,028.65, 1,366,261.26 and 560,309.07
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Solution
The fourth proportional to 990,028.65, 1,366,261.26 and 560,309.07 is: 773,238.81
Step by Step Solution
- Step 1: Write the proportion equation
990,028.65 : 1,366,261.26 = 560,309.07 : x - Step 2: Convert to fraction form
990,028.65/1,366,261.26 = 560,309.07/x - Step 3: Cross multiply
990,028.65x = 1,366,261.26 × 560,309.07 - Step 4: Simplify right side
990,028.65x = 765,528,575,967.63 - Step 5: Solve for x
x = 765,528,575,967.63/990,028.65 - Step 6: Final answer
x = 773,238.81
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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.