Finding the Fourth Proportional to 2,122,920.84, 2,929,601.76 and 1,205,141.96
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Solution
The fourth proportional to 2,122,920.84, 2,929,601.76 and 1,205,141.96 is: 1,663,079.44
Step by Step Solution
- Step 1: Write the proportion equation
2,122,920.84 : 2,929,601.76 = 1,205,141.96 : x - Step 2: Convert to fraction form
2,122,920.84/2,929,601.76 = 1,205,141.96/x - Step 3: Cross multiply
2,122,920.84x = 2,929,601.76 × 1,205,141.96 - Step 4: Simplify right side
2,122,920.84x = 3,530,586,007,065.85 - Step 5: Solve for x
x = 3,530,586,007,065.85/2,122,920.84 - Step 6: Final answer
x = 1,663,079.44
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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.