Finding the Fourth Proportional to 12,621,846.40, 18,945,211.20 and 6,239,305.60
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Solution
The fourth proportional to 12,621,846.40, 18,945,211.20 and 6,239,305.60 is: 9,365,108.61
Step by Step Solution
- Step 1: Write the proportion equation
12,621,846.40 : 18,945,211.20 = 6,239,305.60 : x - Step 2: Convert to fraction form
12,621,846.40/18,945,211.20 = 6,239,305.60/x - Step 3: Cross multiply
12,621,846.40x = 18,945,211.20 × 6,239,305.60 - Step 4: Simplify right side
12,621,846.40x = 118,204,962,333,342.70 - Step 5: Solve for x
x = 118,204,962,333,342.70/12,621,846.40 - Step 6: Final answer
x = 9,365,108.61
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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.