Finding the Fourth Proportional to 912,987.66, 1,369,213.92 and 343,958.21
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Solution
The fourth proportional to 912,987.66, 1,369,213.92 and 343,958.21 is: 515,836.50
Step by Step Solution
- Step 1: Write the proportion equation
912,987.66 : 1,369,213.92 = 343,958.21 : x - Step 2: Convert to fraction form
912,987.66/1,369,213.92 = 343,958.21/x - Step 3: Cross multiply
912,987.66x = 1,369,213.92 × 343,958.21 - Step 4: Simplify right side
912,987.66x = 470,952,362,184.21 - Step 5: Solve for x
x = 470,952,362,184.21/912,987.66 - Step 6: Final answer
x = 515,836.50
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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.