Finding the Fourth Proportional to 12,157,842,638.42, 18,213,013,620.35 and 8,375,566,879.63
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Solution
The fourth proportional to 12,157,842,638.42, 18,213,013,620.35 and 8,375,566,879.63 is: 12,546,988,655.27
Step by Step Solution
- Step 1: Write the proportion equation
12,157,842,638.42 : 18,213,013,620.35 = 8,375,566,879.63 : x - Step 2: Convert to fraction form
12,157,842,638.42/18,213,013,620.35 = 8,375,566,879.63/x - Step 3: Cross multiply
12,157,842,638.42x = 18,213,013,620.35 × 8,375,566,879.63 - Step 4: Simplify right side
12,157,842,638.42x = 152,544,313,656,853,528,576 - Step 5: Solve for x
x = 152,544,313,656,853,528,576/12,157,842,638.42 - Step 6: Final answer
x = 12,546,988,655.27
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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.