Finding the Fourth Proportional to 1,121,926.78, 1,548,258.81 and 612,629.62
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Solution
The fourth proportional to 1,121,926.78, 1,548,258.81 and 612,629.62 is: 845,428.80
Step by Step Solution
- Step 1: Write the proportion equation
1,121,926.78 : 1,548,258.81 = 612,629.62 : x - Step 2: Convert to fraction form
1,121,926.78/1,548,258.81 = 612,629.62/x - Step 3: Cross multiply
1,121,926.78x = 1,548,258.81 × 612,629.62 - Step 4: Simplify right side
1,121,926.78x = 948,509,206,431.95 - Step 5: Solve for x
x = 948,509,206,431.95/1,121,926.78 - Step 6: Final answer
x = 845,428.80
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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.