Finding the Fourth Proportional to 1,131,726,326.18, 1,561,782,402.14 and 629,924,307.43
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Solution
The fourth proportional to 1,131,726,326.18, 1,561,782,402.14 and 629,924,307.43 is: 869,295,584.33
Step by Step Solution
- Step 1: Write the proportion equation
1,131,726,326.18 : 1,561,782,402.14 = 629,924,307.43 : x - Step 2: Convert to fraction form
1,131,726,326.18/1,561,782,402.14 = 629,924,307.43/x - Step 3: Cross multiply
1,131,726,326.18x = 1,561,782,402.14 × 629,924,307.43 - Step 4: Simplify right side
1,131,726,326.18x = 983,804,698,013,442,688 - Step 5: Solve for x
x = 983,804,698,013,442,688/1,131,726,326.18 - Step 6: Final answer
x = 869,295,584.33
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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.