Finding the Fourth Proportional to 4,752,342.70, 7,128,514.05 and 1,556,698.30
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Solution
The fourth proportional to 4,752,342.70, 7,128,514.05 and 1,556,698.30 is: 2,335,047.45
Step by Step Solution
- Step 1: Write the proportion equation
4,752,342.70 : 7,128,514.05 = 1,556,698.30 : x - Step 2: Convert to fraction form
4,752,342.70/7,128,514.05 = 1,556,698.30/x - Step 3: Cross multiply
4,752,342.70x = 7,128,514.05 × 1,556,698.30 - Step 4: Simplify right side
4,752,342.70x = 11,096,945,703,161.12 - Step 5: Solve for x
x = 11,096,945,703,161.12/4,752,342.70 - Step 6: Final answer
x = 2,335,047.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.