Finding the Fourth Proportional to 460,861.80, 691,292.70 and 128,437.80
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Solution
The fourth proportional to 460,861.80, 691,292.70 and 128,437.80 is: 192,656.70
Step by Step Solution
- Step 1: Write the proportion equation
460,861.80 : 691,292.70 = 128,437.80 : x - Step 2: Convert to fraction form
460,861.80/691,292.70 = 128,437.80/x - Step 3: Cross multiply
460,861.80x = 691,292.70 × 128,437.80 - Step 4: Simplify right side
460,861.80x = 88,788,113,544.06 - Step 5: Solve for x
x = 88,788,113,544.06/460,861.80 - Step 6: Final answer
x = 192,656.70
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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.