Finding the Fourth Proportional to 7,987,997.28, 11,023,428.96 and 4,316,911.68
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Solution
The fourth proportional to 7,987,997.28, 11,023,428.96 and 4,316,911.68 is: 5,957,334.18
Step by Step Solution
- Step 1: Write the proportion equation
7,987,997.28 : 11,023,428.96 = 4,316,911.68 : x - Step 2: Convert to fraction form
7,987,997.28/11,023,428.96 = 4,316,911.68/x - Step 3: Cross multiply
7,987,997.28x = 11,023,428.96 × 4,316,911.68 - Step 4: Simplify right side
7,987,997.28x = 47,587,169,231,074.25 - Step 5: Solve for x
x = 47,587,169,231,074.25/7,987,997.28 - Step 6: Final answer
x = 5,957,334.18
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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.