Finding the Fourth Proportional to 786,420.26, 1,085,249.60 and 442,256.09
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Solution
The fourth proportional to 786,420.26, 1,085,249.60 and 442,256.09 is: 610,307.58
Step by Step Solution
- Step 1: Write the proportion equation
786,420.26 : 1,085,249.60 = 442,256.09 : x - Step 2: Convert to fraction form
786,420.26/1,085,249.60 = 442,256.09/x - Step 3: Cross multiply
786,420.26x = 1,085,249.60 × 442,256.09 - Step 4: Simplify right side
786,420.26x = 479,958,240,449.46 - Step 5: Solve for x
x = 479,958,240,449.46/786,420.26 - Step 6: Final answer
x = 610,307.58
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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.