Finding the Fourth Proportional to 465,845.80, 698,768.70 and 128,885.80
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Solution
The fourth proportional to 465,845.80, 698,768.70 and 128,885.80 is: 193,328.70
Step by Step Solution
- Step 1: Write the proportion equation
465,845.80 : 698,768.70 = 128,885.80 : x - Step 2: Convert to fraction form
465,845.80/698,768.70 = 128,885.80/x - Step 3: Cross multiply
465,845.80x = 698,768.70 × 128,885.80 - Step 4: Simplify right side
465,845.80x = 90,061,362,914.46 - Step 5: Solve for x
x = 90,061,362,914.46/465,845.80 - Step 6: Final answer
x = 193,328.70
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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.