Finding the Fourth Proportional to 691,138.45, 1,036,707.68 and 292,229.65
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Solution
The fourth proportional to 691,138.45, 1,036,707.68 and 292,229.65 is: 438,344.48
Step by Step Solution
- Step 1: Write the proportion equation
691,138.45 : 1,036,707.68 = 292,229.65 : x - Step 2: Convert to fraction form
691,138.45/1,036,707.68 = 292,229.65/x - Step 3: Cross multiply
691,138.45x = 1,036,707.68 × 292,229.65 - Step 4: Simplify right side
691,138.45x = 302,956,722,478.71 - Step 5: Solve for x
x = 302,956,722,478.71/691,138.45 - Step 6: Final answer
x = 438,344.48
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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.