Finding the Fourth Proportional to 3,646,621.60, 5,474,857.20 and 2,131,856.80
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Solution
The fourth proportional to 3,646,621.60, 5,474,857.20 and 2,131,856.80 is: 3,200,664.29
Step by Step Solution
- Step 1: Write the proportion equation
3,646,621.60 : 5,474,857.20 = 2,131,856.80 : x - Step 2: Convert to fraction form
3,646,621.60/5,474,857.20 = 2,131,856.80/x - Step 3: Cross multiply
3,646,621.60x = 5,474,857.20 × 2,131,856.80 - Step 4: Simplify right side
3,646,621.60x = 11,671,611,550,848.96 - Step 5: Solve for x
x = 11,671,611,550,848.96/3,646,621.60 - Step 6: Final answer
x = 3,200,664.29
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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.