Finding the Fourth Proportional to 780,965,725.24, 1,077,729,744.36 and 428,547,613.60
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Solution
The fourth proportional to 780,965,725.24, 1,077,729,744.36 and 428,547,613.60 is: 591,394,084.43
Step by Step Solution
- Step 1: Write the proportion equation
780,965,725.24 : 1,077,729,744.36 = 428,547,613.60 : x - Step 2: Convert to fraction form
780,965,725.24/1,077,729,744.36 = 428,547,613.60/x - Step 3: Cross multiply
780,965,725.24x = 1,077,729,744.36 × 428,547,613.60 - Step 4: Simplify right side
780,965,725.24x = 461,858,510,051,216,064 - Step 5: Solve for x
x = 461,858,510,051,216,064/780,965,725.24 - Step 6: Final answer
x = 591,394,084.43
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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.