Finding the Fourth Proportional to 5,115,717,519.12, 7,058,938,763.88 and 2,857,378,836.24
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Solution
The fourth proportional to 5,115,717,519.12, 7,058,938,763.88 and 2,857,378,836.24 is: 3,942,763,093.32
Step by Step Solution
- Step 1: Write the proportion equation
5,115,717,519.12 : 7,058,938,763.88 = 2,857,378,836.24 : x - Step 2: Convert to fraction form
5,115,717,519.12/7,058,938,763.88 = 2,857,378,836.24/x - Step 3: Cross multiply
5,115,717,519.12x = 7,058,938,763.88 × 2,857,378,836.24 - Step 4: Simplify right side
5,115,717,519.12x = 20,170,062,230,224,859,136 - Step 5: Solve for x
x = 20,170,062,230,224,859,136/5,115,717,519.12 - Step 6: Final answer
x = 3,942,763,093.32
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1.5x scale
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.