Finding the Fourth Proportional to 823,451.19, 1,234,320.42 and 318,359.07
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Solution
The fourth proportional to 823,451.19, 1,234,320.42 and 318,359.07 is: 477,207.52
Step by Step Solution
- Step 1: Write the proportion equation
823,451.19 : 1,234,320.42 = 318,359.07 : x - Step 2: Convert to fraction form
823,451.19/1,234,320.42 = 318,359.07/x - Step 3: Cross multiply
823,451.19x = 1,234,320.42 × 318,359.07 - Step 4: Simplify right side
823,451.19x = 392,957,100,993.21 - Step 5: Solve for x
x = 392,957,100,993.21/823,451.19 - Step 6: Final answer
x = 477,207.52
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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.