Finding the Fourth Proportional to 1,381,051.63, 1,905,845.34 and 769,211.65
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Solution
The fourth proportional to 1,381,051.63, 1,905,845.34 and 769,211.65 is: 1,061,508.79
Step by Step Solution
- Step 1: Write the proportion equation
1,381,051.63 : 1,905,845.34 = 769,211.65 : x - Step 2: Convert to fraction form
1,381,051.63/1,905,845.34 = 769,211.65/x - Step 3: Cross multiply
1,381,051.63x = 1,905,845.34 × 769,211.65 - Step 4: Simplify right side
1,381,051.63x = 1,465,998,438,626.21 - Step 5: Solve for x
x = 1,465,998,438,626.21/1,381,051.63 - Step 6: Final answer
x = 1,061,508.79
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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.