Finding the Fourth Proportional to 7,986,768.72, 11,985,543.56 and 3,128,472.62
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Solution
The fourth proportional to 7,986,768.72, 11,985,543.56 and 3,128,472.62 is: 4,694,820.42
Step by Step Solution
- Step 1: Write the proportion equation
7,986,768.72 : 11,985,543.56 = 3,128,472.62 : x - Step 2: Convert to fraction form
7,986,768.72/11,985,543.56 = 3,128,472.62/x - Step 3: Cross multiply
7,986,768.72x = 11,985,543.56 × 3,128,472.62 - Step 4: Simplify right side
7,986,768.72x = 37,496,444,863,277.33 - Step 5: Solve for x
x = 37,496,444,863,277.33/7,986,768.72 - Step 6: Final answer
x = 4,694,820.42
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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.