Finding the Fourth Proportional to 2,128,117.12, 3,192,141.96 and 990,242.92
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Solution
The fourth proportional to 2,128,117.12, 3,192,141.96 and 990,242.92 is: 1,485,348.69
Step by Step Solution
- Step 1: Write the proportion equation
2,128,117.12 : 3,192,141.96 = 990,242.92 : x - Step 2: Convert to fraction form
2,128,117.12/3,192,141.96 = 990,242.92/x - Step 3: Cross multiply
2,128,117.12x = 3,192,141.96 × 990,242.92 - Step 4: Simplify right side
2,128,117.12x = 3,160,995,975,524.92 - Step 5: Solve for x
x = 3,160,995,975,524.92/2,128,117.12 - Step 6: Final answer
x = 1,485,348.69
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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.