Finding the Fourth Proportional to 491,438.68, 678,394.64 and 330,387.14
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Solution
The fourth proportional to 491,438.68, 678,394.64 and 330,387.14 is: 456,074.94
Step by Step Solution
- Step 1: Write the proportion equation
491,438.68 : 678,394.64 = 330,387.14 : x - Step 2: Convert to fraction form
491,438.68/678,394.64 = 330,387.14/x - Step 3: Cross multiply
491,438.68x = 678,394.64 × 330,387.14 - Step 4: Simplify right side
491,438.68x = 224,132,863,606.91 - Step 5: Solve for x
x = 224,132,863,606.91/491,438.68 - Step 6: Final answer
x = 456,074.94
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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.