Finding the Fourth Proportional to 642,365.67, 886,493.65 and 355,885.75
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Solution
The fourth proportional to 642,365.67, 886,493.65 and 355,885.75 is: 491,138.41
Step by Step Solution
- Step 1: Write the proportion equation
642,365.67 : 886,493.65 = 355,885.75 : x - Step 2: Convert to fraction form
642,365.67/886,493.65 = 355,885.75/x - Step 3: Cross multiply
642,365.67x = 886,493.65 × 355,885.75 - Step 4: Simplify right side
642,365.67x = 315,490,453,068.02 - Step 5: Solve for x
x = 315,490,453,068.02/642,365.67 - Step 6: Final answer
x = 491,138.41
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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.