Finding the Fourth Proportional to 772,531.74, 1,066,106.57 and 428,382.18
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Solution
The fourth proportional to 772,531.74, 1,066,106.57 and 428,382.18 is: 591,174.49
Step by Step Solution
- Step 1: Write the proportion equation
772,531.74 : 1,066,106.57 = 428,382.18 : x - Step 2: Convert to fraction form
772,531.74/1,066,106.57 = 428,382.18/x - Step 3: Cross multiply
772,531.74x = 1,066,106.57 × 428,382.18 - Step 4: Simplify right side
772,531.74x = 456,701,054,427.01 - Step 5: Solve for x
x = 456,701,054,427.01/772,531.74 - Step 6: Final answer
x = 591,174.49
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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.