Finding the Fourth Proportional to 811,909.40, 1,217,864.10 and 251,115.80
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Solution
The fourth proportional to 811,909.40, 1,217,864.10 and 251,115.80 is: 376,673.70
Step by Step Solution
- Step 1: Write the proportion equation
811,909.40 : 1,217,864.10 = 251,115.80 : x - Step 2: Convert to fraction form
811,909.40/1,217,864.10 = 251,115.80/x - Step 3: Cross multiply
811,909.40x = 1,217,864.10 × 251,115.80 - Step 4: Simplify right side
811,909.40x = 305,824,917,762.78 - Step 5: Solve for x
x = 305,824,917,762.78/811,909.40 - Step 6: Final answer
x = 376,673.70
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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.