Finding the Fourth Proportional to 1,629,611,668.36, 2,248,918,422.90 and 915,273,106.12
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Solution
The fourth proportional to 1,629,611,668.36, 2,248,918,422.90 and 915,273,106.12 is: 1,263,107,395.65
Step by Step Solution
- Step 1: Write the proportion equation
1,629,611,668.36 : 2,248,918,422.90 = 915,273,106.12 : x - Step 2: Convert to fraction form
1,629,611,668.36/2,248,918,422.90 = 915,273,106.12/x - Step 3: Cross multiply
1,629,611,668.36x = 2,248,918,422.90 × 915,273,106.12 - Step 4: Simplify right side
1,629,611,668.36x = 2,058,374,550,338,174,720 - Step 5: Solve for x
x = 2,058,374,550,338,174,720/1,629,611,668.36 - Step 6: Final answer
x = 1,263,107,395.65
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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.