Finding the Fourth Proportional to 3,902,445.12, 5,378,079.36 and 2,812,833.12
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Solution
The fourth proportional to 3,902,445.12, 5,378,079.36 and 2,812,833.12 is: 3,876,451.63
Step by Step Solution
- Step 1: Write the proportion equation
3,902,445.12 : 5,378,079.36 = 2,812,833.12 : x - Step 2: Convert to fraction form
3,902,445.12/5,378,079.36 = 2,812,833.12/x - Step 3: Cross multiply
3,902,445.12x = 5,378,079.36 × 2,812,833.12 - Step 4: Simplify right side
3,902,445.12x = 15,127,639,745,796.40 - Step 5: Solve for x
x = 15,127,639,745,796.40/3,902,445.12 - Step 6: Final answer
x = 3,876,451.63
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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.