Finding the Fourth Proportional to 1,317,173,128.36, 1,975,770,467.16 and 431,845,566.48
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Solution
The fourth proportional to 1,317,173,128.36, 1,975,770,467.16 and 431,845,566.48 is: 647,771,882.26
Step by Step Solution
- Step 1: Write the proportion equation
1,317,173,128.36 : 1,975,770,467.16 = 431,845,566.48 : x - Step 2: Convert to fraction form
1,317,173,128.36/1,975,770,467.16 = 431,845,566.48/x - Step 3: Cross multiply
1,317,173,128.36x = 1,975,770,467.16 × 431,845,566.48 - Step 4: Simplify right side
1,317,173,128.36x = 853,227,716,625,164,544 - Step 5: Solve for x
x = 853,227,716,625,164,544/1,317,173,128.36 - Step 6: Final answer
x = 647,771,882.26
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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.