Finding the Fourth Proportional to 639,873.27, 883,008.21 and 353,387.19
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Solution
The fourth proportional to 639,873.27, 883,008.21 and 353,387.19 is: 487,664.99
Step by Step Solution
- Step 1: Write the proportion equation
639,873.27 : 883,008.21 = 353,387.19 : x - Step 2: Convert to fraction form
639,873.27/883,008.21 = 353,387.19/x - Step 3: Cross multiply
639,873.27x = 883,008.21 × 353,387.19 - Step 4: Simplify right side
639,873.27x = 312,043,790,078.83 - Step 5: Solve for x
x = 312,043,790,078.83/639,873.27 - Step 6: Final answer
x = 487,664.99
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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.