Finding the Fourth Proportional to 8,129,659.48, 11,219,136.06 and 4,458,722.20
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Solution
The fourth proportional to 8,129,659.48, 11,219,136.06 and 4,458,722.20 is: 6,153,149.60
Step by Step Solution
- Step 1: Write the proportion equation
8,129,659.48 : 11,219,136.06 = 4,458,722.20 : x - Step 2: Convert to fraction form
8,129,659.48/11,219,136.06 = 4,458,722.20/x - Step 3: Cross multiply
8,129,659.48x = 11,219,136.06 × 4,458,722.20 - Step 4: Simplify right side
8,129,659.48x = 50,023,011,015,542.54 - Step 5: Solve for x
x = 50,023,011,015,542.54/8,129,659.48 - Step 6: Final answer
x = 6,153,149.60
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1.5x scale
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.