Finding the Fourth Proportional to 919,672.70, 1,269,258.81 and 557,085.92
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Solution
The fourth proportional to 919,672.70, 1,269,258.81 and 557,085.92 is: 768,845.49
Step by Step Solution
- Step 1: Write the proportion equation
919,672.70 : 1,269,258.81 = 557,085.92 : x - Step 2: Convert to fraction form
919,672.70/1,269,258.81 = 557,085.92/x - Step 3: Cross multiply
919,672.70x = 1,269,258.81 × 557,085.92 - Step 4: Simplify right side
919,672.70x = 707,086,211,886.96 - Step 5: Solve for x
x = 707,086,211,886.96/919,672.70 - Step 6: Final answer
x = 768,845.49
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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.