Finding the Fourth Proportional to 491,977.80, 678,684.42 and 330,839.64
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Solution
The fourth proportional to 491,977.80, 678,684.42 and 330,839.64 is: 456,393.99
Step by Step Solution
- Step 1: Write the proportion equation
491,977.80 : 678,684.42 = 330,839.64 : x - Step 2: Convert to fraction form
491,977.80/678,684.42 = 330,839.64/x - Step 3: Cross multiply
491,977.80x = 678,684.42 × 330,839.64 - Step 4: Simplify right side
491,977.80x = 224,535,709,186.41 - Step 5: Solve for x
x = 224,535,709,186.41/491,977.80 - Step 6: Final answer
x = 456,393.99
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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.