Finding the Fourth Proportional to 3,987,636.12, 5,982,397.02 and 1,291,956.96
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Solution
The fourth proportional to 3,987,636.12, 5,982,397.02 and 1,291,956.96 is: 1,938,240.91
Step by Step Solution
- Step 1: Write the proportion equation
3,987,636.12 : 5,982,397.02 = 1,291,956.96 : x - Step 2: Convert to fraction form
3,987,636.12/5,982,397.02 = 1,291,956.96/x - Step 3: Cross multiply
3,987,636.12x = 5,982,397.02 × 1,291,956.96 - Step 4: Simplify right side
3,987,636.12x = 7,728,999,467,472.26 - Step 5: Solve for x
x = 7,728,999,467,472.26/3,987,636.12 - Step 6: Final answer
x = 1,938,240.91
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.