Finding the Fourth Proportional to 491,443.05, 678,400.68 and 330,391.53
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Solution
The fourth proportional to 491,443.05, 678,400.68 and 330,391.53 is: 456,081.00
Step by Step Solution
- Step 1: Write the proportion equation
491,443.05 : 678,400.68 = 330,391.53 : x - Step 2: Convert to fraction form
491,443.05/678,400.68 = 330,391.53/x - Step 3: Cross multiply
491,443.05x = 678,400.68 × 330,391.53 - Step 4: Simplify right side
491,443.05x = 224,137,838,618.24 - Step 5: Solve for x
x = 224,137,838,618.24/491,443.05 - Step 6: Final answer
x = 456,081.00
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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.