Finding the Fourth Proportional to 1,121,913.28, 1,548,240.18 and 612,616.12
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Solution
The fourth proportional to 1,121,913.28, 1,548,240.18 and 612,616.12 is: 845,410.17
Step by Step Solution
- Step 1: Write the proportion equation
1,121,913.28 : 1,548,240.18 = 612,616.12 : x - Step 2: Convert to fraction form
1,121,913.28/1,548,240.18 = 612,616.12/x - Step 3: Cross multiply
1,121,913.28x = 1,548,240.18 × 612,616.12 - Step 4: Simplify right side
1,121,913.28x = 948,476,891,899.70 - Step 5: Solve for x
x = 948,476,891,899.70/1,121,913.28 - Step 6: Final answer
x = 845,410.17
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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.