Finding the Fourth Proportional to 465,771.80, 698,657.70 and 128,811.80
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Solution
The fourth proportional to 465,771.80, 698,657.70 and 128,811.80 is: 193,217.70
Step by Step Solution
- Step 1: Write the proportion equation
465,771.80 : 698,657.70 = 128,811.80 : x - Step 2: Convert to fraction form
465,771.80/698,657.70 = 128,811.80/x - Step 3: Cross multiply
465,771.80x = 698,657.70 × 128,811.80 - Step 4: Simplify right side
465,771.80x = 89,995,355,920.86 - Step 5: Solve for x
x = 89,995,355,920.86/465,771.80 - Step 6: Final answer
x = 193,217.70
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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.