Finding the Fourth Proportional to 461,321.70, 691,982.55 and 128,897.70
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Solution
The fourth proportional to 461,321.70, 691,982.55 and 128,897.70 is: 193,346.55
Step by Step Solution
- Step 1: Write the proportion equation
461,321.70 : 691,982.55 = 128,897.70 : x - Step 2: Convert to fraction form
461,321.70/691,982.55 = 128,897.70/x - Step 3: Cross multiply
461,321.70x = 691,982.55 × 128,897.70 - Step 4: Simplify right side
461,321.70x = 89,194,959,135.14 - Step 5: Solve for x
x = 89,194,959,135.14/461,321.70 - Step 6: Final answer
x = 193,346.55
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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.