Finding the Fourth Proportional to 780,965,691.18, 1,077,729,697.26 and 428,547,579.54
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Solution
The fourth proportional to 780,965,691.18, 1,077,729,697.26 and 428,547,579.54 is: 591,394,037.38
Step by Step Solution
- Step 1: Write the proportion equation
780,965,691.18 : 1,077,729,697.26 = 428,547,579.54 : x - Step 2: Convert to fraction form
780,965,691.18/1,077,729,697.26 = 428,547,579.54/x - Step 3: Cross multiply
780,965,691.18x = 1,077,729,697.26 × 428,547,579.54 - Step 4: Simplify right side
780,965,691.18x = 461,858,453,159,150,016 - Step 5: Solve for x
x = 461,858,453,159,150,016/780,965,691.18 - Step 6: Final answer
x = 591,394,037.38
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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.