Finding the Fourth Proportional to 1,057,198.19, 1,458,680.76 and 643,730.11
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Solution
The fourth proportional to 1,057,198.19, 1,458,680.76 and 643,730.11 is: 888,193.66
Step by Step Solution
- Step 1: Write the proportion equation
1,057,198.19 : 1,458,680.76 = 643,730.11 : x - Step 2: Convert to fraction form
1,057,198.19/1,458,680.76 = 643,730.11/x - Step 3: Cross multiply
1,057,198.19x = 1,458,680.76 × 643,730.11 - Step 4: Simplify right side
1,057,198.19x = 938,996,722,442.98 - Step 5: Solve for x
x = 938,996,722,442.98/1,057,198.19 - Step 6: Final answer
x = 888,193.66
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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.