Finding the Fourth Proportional to 661,251.67, 911,682.61 and 428,267.05
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Solution
The fourth proportional to 661,251.67, 911,682.61 and 428,267.05 is: 590,461.45
Step by Step Solution
- Step 1: Write the proportion equation
661,251.67 : 911,682.61 = 428,267.05 : x - Step 2: Convert to fraction form
661,251.67/911,682.61 = 428,267.05/x - Step 3: Cross multiply
661,251.67x = 911,682.61 × 428,267.05 - Step 4: Simplify right side
661,251.67x = 390,443,618,571.13 - Step 5: Solve for x
x = 390,443,618,571.13/661,251.67 - Step 6: Final answer
x = 590,461.45
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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.