Finding the Fourth Proportional to 2,405,879.20, 3,319,691.30 and 1,372,915.36
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Solution
The fourth proportional to 2,405,879.20, 3,319,691.30 and 1,372,915.36 is: 1,894,382.38
Step by Step Solution
- Step 1: Write the proportion equation
2,405,879.20 : 3,319,691.30 = 1,372,915.36 : x - Step 2: Convert to fraction form
2,405,879.20/3,319,691.30 = 1,372,915.36/x - Step 3: Cross multiply
2,405,879.20x = 3,319,691.30 × 1,372,915.36 - Step 4: Simplify right side
2,405,879.20x = 4,557,655,176,228.37 - Step 5: Solve for x
x = 4,557,655,176,228.37/2,405,879.20 - Step 6: Final answer
x = 1,894,382.38
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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.