Finding the Fourth Proportional to 642,353.05, 886,412.29 and 355,856.05
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Solution
The fourth proportional to 642,353.05, 886,412.29 and 355,856.05 is: 491,062.00
Step by Step Solution
- Step 1: Write the proportion equation
642,353.05 : 886,412.29 = 355,856.05 : x - Step 2: Convert to fraction form
642,353.05/886,412.29 = 355,856.05/x - Step 3: Cross multiply
642,353.05x = 886,412.29 × 355,856.05 - Step 4: Simplify right side
642,353.05x = 315,435,176,190.86 - Step 5: Solve for x
x = 315,435,176,190.86/642,353.05 - Step 6: Final answer
x = 491,062.00
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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.