Finding the Fourth Proportional to 1,115,324,487.76, 1,672,631,791.80 and 368,201,149.84
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Solution
The fourth proportional to 1,115,324,487.76, 1,672,631,791.80 and 368,201,149.84 is: 552,184,548.76
Step by Step Solution
- Step 1: Write the proportion equation
1,115,324,487.76 : 1,672,631,791.80 = 368,201,149.84 : x - Step 2: Convert to fraction form
1,115,324,487.76/1,672,631,791.80 = 368,201,149.84/x - Step 3: Cross multiply
1,115,324,487.76x = 1,672,631,791.80 × 368,201,149.84 - Step 4: Simplify right side
1,115,324,487.76x = 615,864,948,999,699,456 - Step 5: Solve for x
x = 615,864,948,999,699,456/1,115,324,487.76 - Step 6: Final answer
x = 552,184,548.76
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1.5x scale
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.