Finding the Fourth Proportional to 12,220,276.80, 18,330,412.44 and 3,122,391.40
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Solution
The fourth proportional to 12,220,276.80, 18,330,412.44 and 3,122,391.40 is: 4,683,586.39
Step by Step Solution
- Step 1: Write the proportion equation
12,220,276.80 : 18,330,412.44 = 3,122,391.40 : x - Step 2: Convert to fraction form
12,220,276.80/18,330,412.44 = 3,122,391.40/x - Step 3: Cross multiply
12,220,276.80x = 18,330,412.44 × 3,122,391.40 - Step 4: Simplify right side
12,220,276.80x = 57,234,722,161,109.02 - Step 5: Solve for x
x = 57,234,722,161,109.02/12,220,276.80 - Step 6: Final answer
x = 4,683,586.39
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1.5x scale
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.