Finding the Fourth Proportional to 642,628.18, 886,790.87 and 352,184.42
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Solution
The fourth proportional to 642,628.18, 886,790.87 and 352,184.42 is: 485,994.76
Step by Step Solution
- Step 1: Write the proportion equation
642,628.18 : 886,790.87 = 352,184.42 : x - Step 2: Convert to fraction form
642,628.18/886,790.87 = 352,184.42/x - Step 3: Cross multiply
642,628.18x = 886,790.87 × 352,184.42 - Step 4: Simplify right side
642,628.18x = 312,313,929,988.99 - Step 5: Solve for x
x = 312,313,929,988.99/642,628.18 - Step 6: Final answer
x = 485,994.76
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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.