Finding the Fourth Proportional to 804,933.70, 1,207,400.55 and 431,685.70
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Solution
The fourth proportional to 804,933.70, 1,207,400.55 and 431,685.70 is: 647,528.55
Step by Step Solution
- Step 1: Write the proportion equation
804,933.70 : 1,207,400.55 = 431,685.70 : x - Step 2: Convert to fraction form
804,933.70/1,207,400.55 = 431,685.70/x - Step 3: Cross multiply
804,933.70x = 1,207,400.55 × 431,685.70 - Step 4: Simplify right side
804,933.70x = 521,217,551,607.14 - Step 5: Solve for x
x = 521,217,551,607.14/804,933.70 - Step 6: Final answer
x = 647,528.55
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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.