Finding the Fourth Proportional to 431,138,115.40, 646,707,173.10 and 124,440,233.80
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Solution
The fourth proportional to 431,138,115.40, 646,707,173.10 and 124,440,233.80 is: 186,660,350.70
Step by Step Solution
- Step 1: Write the proportion equation
431,138,115.40 : 646,707,173.10 = 124,440,233.80 : x - Step 2: Convert to fraction form
431,138,115.40/646,707,173.10 = 124,440,233.80/x - Step 3: Cross multiply
431,138,115.40x = 646,707,173.10 × 124,440,233.80 - Step 4: Simplify right side
431,138,115.40x = 80,476,391,820,701,072 - Step 5: Solve for x
x = 80,476,391,820,701,072/431,138,115.40 - Step 6: Final answer
x = 186,660,350.70
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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.