Finding the Fourth Proportional to 12,702,280,340, 19,055,591,203.84 and 5,236,782,102.08
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Solution
The fourth proportional to 12,702,280,340, 19,055,591,203.84 and 5,236,782,102.08 is: 7,856,068,067.29
Step by Step Solution
- Step 1: Write the proportion equation
12,702,280,340 : 19,055,591,203.84 = 5,236,782,102.08 : x - Step 2: Convert to fraction form
12,702,280,340/19,055,591,203.84 = 5,236,782,102.08/x - Step 3: Cross multiply
12,702,280,340x = 19,055,591,203.84 × 5,236,782,102.08 - Step 4: Simplify right side
12,702,280,340x = 99,789,978,960,822,386,688 - Step 5: Solve for x
x = 99,789,978,960,822,386,688/12,702,280,340 - Step 6: Final answer
x = 7,856,068,067.29
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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.