Finding the Fourth Proportional to 772,338.27, 1,065,889.74 and 428,282.09
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Solution
The fourth proportional to 772,338.27, 1,065,889.74 and 428,282.09 is: 591,064.17
Step by Step Solution
- Step 1: Write the proportion equation
772,338.27 : 1,065,889.74 = 428,282.09 : x - Step 2: Convert to fraction form
772,338.27/1,065,889.74 = 428,282.09/x - Step 3: Cross multiply
772,338.27x = 1,065,889.74 × 428,282.09 - Step 4: Simplify right side
772,338.27x = 456,501,480,227.31 - Step 5: Solve for x
x = 456,501,480,227.31/772,338.27 - Step 6: Final answer
x = 591,064.17
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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.