Finding the Fourth Proportional to 639,013,900,745.10, 881,866,902,990.81 and 353,872,420,841.09
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Solution
The fourth proportional to 639,013,900,745.10, 881,866,902,990.81 and 353,872,420,841.09 is: 488,359,291,491.34
Step by Step Solution
- Step 1: Write the proportion equation
639,013,900,745.10 : 881,866,902,990.81 = 353,872,420,841.09 : x - Step 2: Convert to fraction form
639,013,900,745.10/881,866,902,990.81 = 353,872,420,841.09/x - Step 3: Cross multiply
639,013,900,745.10x = 881,866,902,990.81 × 353,872,420,841.09 - Step 4: Simplify right side
639,013,900,745.10x = 312,068,375,820,992,656,703,488 - Step 5: Solve for x
x = 312,068,375,820,992,656,703,488/639,013,900,745.10 - Step 6: Final answer
x = 488,359,291,491.34
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.