Finding the Fourth Proportional to 2,128,203.40, 3,192,305.10 and 1,415,921.80
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Solution
The fourth proportional to 2,128,203.40, 3,192,305.10 and 1,415,921.80 is: 2,123,882.70
Step by Step Solution
- Step 1: Write the proportion equation
2,128,203.40 : 3,192,305.10 = 1,415,921.80 : x - Step 2: Convert to fraction form
2,128,203.40/3,192,305.10 = 1,415,921.80/x - Step 3: Cross multiply
2,128,203.40x = 3,192,305.10 × 1,415,921.80 - Step 4: Simplify right side
2,128,203.40x = 4,520,054,383,341.18 - Step 5: Solve for x
x = 4,520,054,383,341.18/2,128,203.40 - Step 6: Final answer
x = 2,123,882.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.