Finding the Fourth Proportional to 2,177,979.21, 3,005,797.34 and 1,211,297.88
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Solution
The fourth proportional to 2,177,979.21, 3,005,797.34 and 1,211,297.88 is: 1,671,694.53
Step by Step Solution
- Step 1: Write the proportion equation
2,177,979.21 : 3,005,797.34 = 1,211,297.88 : x - Step 2: Convert to fraction form
2,177,979.21/3,005,797.34 = 1,211,297.88/x - Step 3: Cross multiply
2,177,979.21x = 3,005,797.34 × 1,211,297.88 - Step 4: Simplify right side
2,177,979.21x = 3,640,915,939,595.15 - Step 5: Solve for x
x = 3,640,915,939,595.15/2,177,979.21 - Step 6: Final answer
x = 1,671,694.53
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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.