Finding the Fourth Proportional to 491,449.66, 678,409.73 and 330,398.08
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Solution
The fourth proportional to 491,449.66, 678,409.73 and 330,398.08 is: 456,089.99
Step by Step Solution
- Step 1: Write the proportion equation
491,449.66 : 678,409.73 = 330,398.08 : x - Step 2: Convert to fraction form
491,449.66/678,409.73 = 330,398.08/x - Step 3: Cross multiply
491,449.66x = 678,409.73 × 330,398.08 - Step 4: Simplify right side
491,449.66x = 224,145,272,245.32 - Step 5: Solve for x
x = 224,145,272,245.32/491,449.66 - Step 6: Final answer
x = 456,089.99
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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.