Finding the Fourth Proportional to 642,757.68, 887,048.28 and 356,289.84
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Solution
The fourth proportional to 642,757.68, 887,048.28 and 356,289.84 is: 491,703.64
Step by Step Solution
- Step 1: Write the proportion equation
642,757.68 : 887,048.28 = 356,289.84 : x - Step 2: Convert to fraction form
642,757.68/887,048.28 = 356,289.84/x - Step 3: Cross multiply
642,757.68x = 887,048.28 × 356,289.84 - Step 4: Simplify right side
642,757.68x = 316,046,289,753.48 - Step 5: Solve for x
x = 316,046,289,753.48/642,757.68 - Step 6: Final answer
x = 491,703.64
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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.