Finding the Fourth Proportional to 642,534.84, 886,698.21 and 352,157.94
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Solution
The fourth proportional to 642,534.84, 886,698.21 and 352,157.94 is: 485,978.03
Step by Step Solution
- Step 1: Write the proportion equation
642,534.84 : 886,698.21 = 352,157.94 : x - Step 2: Convert to fraction form
642,534.84/886,698.21 = 352,157.94/x - Step 3: Cross multiply
642,534.84x = 886,698.21 × 352,157.94 - Step 4: Simplify right side
642,534.84x = 312,257,815,035.29 - Step 5: Solve for x
x = 312,257,815,035.29/642,534.84 - Step 6: Final answer
x = 485,978.03
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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.