Finding the Fourth Proportional to 1,424,439.58, 1,965,721.38 and 812,591.26
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Solution
The fourth proportional to 1,424,439.58, 1,965,721.38 and 812,591.26 is: 1,121,372.95
Step by Step Solution
- Step 1: Write the proportion equation
1,424,439.58 : 1,965,721.38 = 812,591.26 : x - Step 2: Convert to fraction form
1,424,439.58/1,965,721.38 = 812,591.26/x - Step 3: Cross multiply
1,424,439.58x = 1,965,721.38 × 812,591.26 - Step 4: Simplify right side
1,424,439.58x = 1,597,328,012,983.14 - Step 5: Solve for x
x = 1,597,328,012,983.14/1,424,439.58 - Step 6: Final answer
x = 1,121,372.95
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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.