Finding the Fourth Proportional to 7,453,135.60, 11,179,703.40 and 2,660,981.20
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Solution
The fourth proportional to 7,453,135.60, 11,179,703.40 and 2,660,981.20 is: 3,991,471.80
Step by Step Solution
- Step 1: Write the proportion equation
7,453,135.60 : 11,179,703.40 = 2,660,981.20 : x - Step 2: Convert to fraction form
7,453,135.60/11,179,703.40 = 2,660,981.20/x - Step 3: Cross multiply
7,453,135.60x = 11,179,703.40 × 2,660,981.20 - Step 4: Simplify right side
7,453,135.60x = 29,748,980,568,976.08 - Step 5: Solve for x
x = 29,748,980,568,976.08/7,453,135.60 - Step 6: Final answer
x = 3,991,471.80
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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.