Finding the Fourth Proportional to 1,213,818,858.23, 1,675,052,197.66 and 677,978,343.08
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Solution
The fourth proportional to 1,213,818,858.23, 1,675,052,197.66 and 677,978,343.08 is: 935,600,156.35
Step by Step Solution
- Step 1: Write the proportion equation
1,213,818,858.23 : 1,675,052,197.66 = 677,978,343.08 : x - Step 2: Convert to fraction form
1,213,818,858.23/1,675,052,197.66 = 677,978,343.08/x - Step 3: Cross multiply
1,213,818,858.23x = 1,675,052,197.66 × 677,978,343.08 - Step 4: Simplify right side
1,213,818,858.23x = 1,135,649,113,539,339,392 - Step 5: Solve for x
x = 1,135,649,113,539,339,392/1,213,818,858.23 - Step 6: Final answer
x = 935,600,156.35
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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.