Finding the Fourth Proportional to 460,809.02, 691,212.99 and 128,385.02
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Solution
The fourth proportional to 460,809.02, 691,212.99 and 128,385.02 is: 192,577.38
Step by Step Solution
- Step 1: Write the proportion equation
460,809.02 : 691,212.99 = 128,385.02 : x - Step 2: Convert to fraction form
460,809.02/691,212.99 = 128,385.02/x - Step 3: Cross multiply
460,809.02x = 691,212.99 × 128,385.02 - Step 4: Simplify right side
460,809.02x = 88,741,393,545.41 - Step 5: Solve for x
x = 88,741,393,545.41/460,809.02 - Step 6: Final answer
x = 192,577.38
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.