Finding the Fourth Proportional to 1,201,387.55, 1,658,514.69 and 691,991.51
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Solution
The fourth proportional to 1,201,387.55, 1,658,514.69 and 691,991.51 is: 955,293.80
Step by Step Solution
- Step 1: Write the proportion equation
1,201,387.55 : 1,658,514.69 = 691,991.51 : x - Step 2: Convert to fraction form
1,201,387.55/1,658,514.69 = 691,991.51/x - Step 3: Cross multiply
1,201,387.55x = 1,658,514.69 × 691,991.51 - Step 4: Simplify right side
1,201,387.55x = 1,147,678,076,397.71 - Step 5: Solve for x
x = 1,147,678,076,397.71/1,201,387.55 - Step 6: Final answer
x = 955,293.80
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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.