Finding the Fourth Proportional to 691,097,469.20, 1,036,646,203.80 and 671,965,593.20
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Solution
The fourth proportional to 691,097,469.20, 1,036,646,203.80 and 671,965,593.20 is: 1,007,948,389.80
Step by Step Solution
- Step 1: Write the proportion equation
691,097,469.20 : 1,036,646,203.80 = 671,965,593.20 : x - Step 2: Convert to fraction form
691,097,469.20/1,036,646,203.80 = 671,965,593.20/x - Step 3: Cross multiply
691,097,469.20x = 1,036,646,203.80 × 671,965,593.20 - Step 4: Simplify right side
691,097,469.20x = 696,590,581,274,995,072 - Step 5: Solve for x
x = 696,590,581,274,995,072/691,097,469.20 - Step 6: Final answer
x = 1,007,948,389.80
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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.