Finding the Fourth Proportional to 7,489,987.62, 10,343,321.29 and 7,081,934.26
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Solution
The fourth proportional to 7,489,987.62, 10,343,321.29 and 7,081,934.26 is: 9,779,818.75
Step by Step Solution
- Step 1: Write the proportion equation
7,489,987.62 : 10,343,321.29 = 7,081,934.26 : x - Step 2: Convert to fraction form
7,489,987.62/10,343,321.29 = 7,081,934.26/x - Step 3: Cross multiply
7,489,987.62x = 10,343,321.29 × 7,081,934.26 - Step 4: Simplify right side
7,489,987.62x = 73,250,721,385,914.47 - Step 5: Solve for x
x = 73,250,721,385,914.47/7,489,987.62 - Step 6: Final answer
x = 9,779,818.75
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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.