Finding the Fourth Proportional to 673,085.76, 928,958.88 and 431,640.96
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Solution
The fourth proportional to 673,085.76, 928,958.88 and 431,640.96 is: 595,728.99
Step by Step Solution
- Step 1: Write the proportion equation
673,085.76 : 928,958.88 = 431,640.96 : x - Step 2: Convert to fraction form
673,085.76/928,958.88 = 431,640.96/x - Step 3: Cross multiply
673,085.76x = 928,958.88 × 431,640.96 - Step 4: Simplify right side
673,085.76x = 400,976,702,763.73 - Step 5: Solve for x
x = 400,976,702,763.73/673,085.76 - Step 6: Final answer
x = 595,728.99
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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.