Finding the Fourth Proportional to 512,972.79, 769,459.23 and 138,995.79
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Solution
The fourth proportional to 512,972.79, 769,459.23 and 138,995.79 is: 208,493.70
Step by Step Solution
- Step 1: Write the proportion equation
512,972.79 : 769,459.23 = 138,995.79 : x - Step 2: Convert to fraction form
512,972.79/769,459.23 = 138,995.79/x - Step 3: Cross multiply
512,972.79x = 769,459.23 × 138,995.79 - Step 4: Simplify right side
512,972.79x = 106,951,593,546.64 - Step 5: Solve for x
x = 106,951,593,546.64/512,972.79 - Step 6: Final answer
x = 208,493.70
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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.