Finding the Fourth Proportional to 1,102,921.58, 1,521,644.19 and 721,171.82
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Solution
The fourth proportional to 1,102,921.58, 1,521,644.19 and 721,171.82 is: 994,963.68
Step by Step Solution
- Step 1: Write the proportion equation
1,102,921.58 : 1,521,644.19 = 721,171.82 : x - Step 2: Convert to fraction form
1,102,921.58/1,521,644.19 = 721,171.82/x - Step 3: Cross multiply
1,102,921.58x = 1,521,644.19 × 721,171.82 - Step 4: Simplify right side
1,102,921.58x = 1,097,366,909,894.73 - Step 5: Solve for x
x = 1,097,366,909,894.73/1,102,921.58 - Step 6: Final answer
x = 994,963.68
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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.