Finding the Fourth Proportional to 811,803.36, 1,120,290.48 and 449,253.60
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Solution
The fourth proportional to 811,803.36, 1,120,290.48 and 449,253.60 is: 619,970.99
Step by Step Solution
- Step 1: Write the proportion equation
811,803.36 : 1,120,290.48 = 449,253.60 : x - Step 2: Convert to fraction form
811,803.36/1,120,290.48 = 449,253.60/x - Step 3: Cross multiply
811,803.36x = 1,120,290.48 × 449,253.60 - Step 4: Simplify right side
811,803.36x = 503,294,531,185.73 - Step 5: Solve for x
x = 503,294,531,185.73/811,803.36 - Step 6: Final answer
x = 619,970.99
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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.