Finding the Fourth Proportional to 1,231,606,634.13, 1,699,603,610.08 and 667,077,471.09
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Solution
The fourth proportional to 1,231,606,634.13, 1,699,603,610.08 and 667,077,471.09 is: 920,559,573.69
Step by Step Solution
- Step 1: Write the proportion equation
1,231,606,634.13 : 1,699,603,610.08 = 667,077,471.09 : x - Step 2: Convert to fraction form
1,231,606,634.13/1,699,603,610.08 = 667,077,471.09/x - Step 3: Cross multiply
1,231,606,634.13x = 1,699,603,610.08 × 667,077,471.09 - Step 4: Simplify right side
1,231,606,634.13x = 1,133,767,278,067,600,896 - Step 5: Solve for x
x = 1,133,767,278,067,600,896/1,231,606,634.13 - Step 6: Final answer
x = 920,559,573.69
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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.