Finding the Fourth Proportional to 28,135,390,475,512, 38,827,780,601,247 and 15,635,647,358,728
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Solution
The fourth proportional to 28,135,390,475,512, 38,827,780,601,247 and 15,635,647,358,728 is: 21,577,716,709,905.02
Step by Step Solution
- Step 1: Write the proportion equation
28,135,390,475,512 : 38,827,780,601,247 = 15,635,647,358,728 : x - Step 2: Convert to fraction form
28,135,390,475,512/38,827,780,601,247 = 15,635,647,358,728/x - Step 3: Cross multiply
28,135,390,475,512x = 38,827,780,601,247 × 15,635,647,358,728 - Step 4: Simplify right side
28,135,390,475,512x = 607,097,485,203,157,904,951,083,008 - Step 5: Solve for x
x = 607,097,485,203,157,904,951,083,008/28,135,390,475,512 - Step 6: Final answer
x = 21,577,716,709,905.02
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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.