Finding the Fourth Proportional to 3,456,536.19, 4,768,689.56 and 2,165,128.35
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Solution
The fourth proportional to 3,456,536.19, 4,768,689.56 and 2,165,128.35 is: 2,987,043.79
Step by Step Solution
- Step 1: Write the proportion equation
3,456,536.19 : 4,768,689.56 = 2,165,128.35 : x - Step 2: Convert to fraction form
3,456,536.19/4,768,689.56 = 2,165,128.35/x - Step 3: Cross multiply
3,456,536.19x = 4,768,689.56 × 2,165,128.35 - Step 4: Simplify right side
3,456,536.19x = 10,324,824,947,879.38 - Step 5: Solve for x
x = 10,324,824,947,879.38/3,456,536.19 - Step 6: Final answer
x = 2,987,043.79
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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.