Finding the Fourth Proportional to 642,819.69, 887,101.14 and 352,457.75
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Solution
The fourth proportional to 642,819.69, 887,101.14 and 352,457.75 is: 486,397.15
Step by Step Solution
- Step 1: Write the proportion equation
642,819.69 : 887,101.14 = 352,457.75 : x - Step 2: Convert to fraction form
642,819.69/887,101.14 = 352,457.75/x - Step 3: Cross multiply
642,819.69x = 887,101.14 × 352,457.75 - Step 4: Simplify right side
642,819.69x = 312,665,667,391.33 - Step 5: Solve for x
x = 312,665,667,391.33/642,819.69 - Step 6: Final answer
x = 486,397.15
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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.