Finding the Fourth Proportional to 782,674.92, 1,080,108.81 and 438,536.43
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Solution
The fourth proportional to 782,674.92, 1,080,108.81 and 438,536.43 is: 605,190.03
Step by Step Solution
- Step 1: Write the proportion equation
782,674.92 : 1,080,108.81 = 438,536.43 : x - Step 2: Convert to fraction form
782,674.92/1,080,108.81 = 438,536.43/x - Step 3: Cross multiply
782,674.92x = 1,080,108.81 × 438,536.43 - Step 4: Simplify right side
782,674.92x = 473,667,061,548.95 - Step 5: Solve for x
x = 473,667,061,548.95/782,674.92 - Step 6: Final answer
x = 605,190.03
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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.