Finding the Fourth Proportional to 811,965.98, 1,120,515.45 and 449,415.02
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Solution
The fourth proportional to 811,965.98, 1,120,515.45 and 449,415.02 is: 620,194.05
Step by Step Solution
- Step 1: Write the proportion equation
811,965.98 : 1,120,515.45 = 449,415.02 : x - Step 2: Convert to fraction form
811,965.98/1,120,515.45 = 449,415.02/x - Step 3: Cross multiply
811,965.98x = 1,120,515.45 × 449,415.02 - Step 4: Simplify right side
811,965.98x = 503,576,473,372.06 - Step 5: Solve for x
x = 503,576,473,372.06/811,965.98 - Step 6: Final answer
x = 620,194.05
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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.