Finding the Fourth Proportional to 18,741,808.48, 28,114,987.61 and 5,278,636.48
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Solution
The fourth proportional to 18,741,808.48, 28,114,987.61 and 5,278,636.48 is: 7,918,595.44
Step by Step Solution
- Step 1: Write the proportion equation
18,741,808.48 : 28,114,987.61 = 5,278,636.48 : x - Step 2: Convert to fraction form
18,741,808.48/28,114,987.61 = 5,278,636.48/x - Step 3: Cross multiply
18,741,808.48x = 28,114,987.61 × 5,278,636.48 - Step 4: Simplify right side
18,741,808.48x = 148,408,799,232,894.03 - Step 5: Solve for x
x = 148,408,799,232,894.03/18,741,808.48 - Step 6: Final answer
x = 7,918,595.44
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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.