Finding the Fourth Proportional to 811,811.36, 1,120,282.90 and 449,234.98
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Solution
The fourth proportional to 811,811.36, 1,120,282.90 and 449,234.98 is: 619,934.99
Step by Step Solution
- Step 1: Write the proportion equation
811,811.36 : 1,120,282.90 = 449,234.98 : x - Step 2: Convert to fraction form
811,811.36/1,120,282.90 = 449,234.98/x - Step 3: Cross multiply
811,811.36x = 1,120,282.90 × 449,234.98 - Step 4: Simplify right side
811,811.36x = 503,270,266,175.84 - Step 5: Solve for x
x = 503,270,266,175.84/811,811.36 - Step 6: Final answer
x = 619,934.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.