Finding the Fourth Proportional to 5,129,314.48, 7,078,621.76 and 2,806,153.08
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Solution
The fourth proportional to 5,129,314.48, 7,078,621.76 and 2,806,153.08 is: 3,872,583.04
Step by Step Solution
- Step 1: Write the proportion equation
5,129,314.48 : 7,078,621.76 = 2,806,153.08 : x - Step 2: Convert to fraction form
5,129,314.48/7,078,621.76 = 2,806,153.08/x - Step 3: Cross multiply
5,129,314.48x = 7,078,621.76 × 2,806,153.08 - Step 4: Simplify right side
5,129,314.48x = 19,863,696,253,979.02 - Step 5: Solve for x
x = 19,863,696,253,979.02/5,129,314.48 - Step 6: Final answer
x = 3,872,583.04
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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.