Finding the Fourth Proportional to 1,621,383,186.15, 2,237,512,093.98 and 878,827,751.91
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Solution
The fourth proportional to 1,621,383,186.15, 2,237,512,093.98 and 878,827,751.91 is: 1,212,784,084.74
Step by Step Solution
- Step 1: Write the proportion equation
1,621,383,186.15 : 2,237,512,093.98 = 878,827,751.91 : x - Step 2: Convert to fraction form
1,621,383,186.15/2,237,512,093.98 = 878,827,751.91/x - Step 3: Cross multiply
1,621,383,186.15x = 2,237,512,093.98 × 878,827,751.91 - Step 4: Simplify right side
1,621,383,186.15x = 1,966,387,723,423,879,936 - Step 5: Solve for x
x = 1,966,387,723,423,879,936/1,621,383,186.15 - Step 6: Final answer
x = 1,212,784,084.74
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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.