Finding the Fourth Proportional to 639,156,367.49, 959,010,748.34 and 343,706,163.03
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Solution
The fourth proportional to 639,156,367.49, 959,010,748.34 and 343,706,163.03 is: 515,707,769.46
Step by Step Solution
- Step 1: Write the proportion equation
639,156,367.49 : 959,010,748.34 = 343,706,163.03 : x - Step 2: Convert to fraction form
639,156,367.49/959,010,748.34 = 343,706,163.03/x - Step 3: Cross multiply
639,156,367.49x = 959,010,748.34 × 343,706,163.03 - Step 4: Simplify right side
639,156,367.49x = 329,617,904,614,751,808 - Step 5: Solve for x
x = 329,617,904,614,751,808/639,156,367.49 - Step 6: Final answer
x = 515,707,769.46
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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.