Finding the Fourth Proportional to 561,128.70, 774,357.60 and 306,480.49
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Solution
The fourth proportional to 561,128.70, 774,357.60 and 306,480.49 is: 422,943.07
Step by Step Solution
- Step 1: Write the proportion equation
561,128.70 : 774,357.60 = 306,480.49 : x - Step 2: Convert to fraction form
561,128.70/774,357.60 = 306,480.49/x - Step 3: Cross multiply
561,128.70x = 774,357.60 × 306,480.49 - Step 4: Simplify right side
561,128.70x = 237,325,496,683.22 - Step 5: Solve for x
x = 237,325,496,683.22/561,128.70 - Step 6: Final answer
x = 422,943.07
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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.