Finding the Fourth Proportional to 687,979.58, 949,861.49 and 446,949.09
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Solution
The fourth proportional to 687,979.58, 949,861.49 and 446,949.09 is: 617,081.88
Step by Step Solution
- Step 1: Write the proportion equation
687,979.58 : 949,861.49 = 446,949.09 : x - Step 2: Convert to fraction form
687,979.58/949,861.49 = 446,949.09/x - Step 3: Cross multiply
687,979.58x = 949,861.49 × 446,949.09 - Step 4: Simplify right side
687,979.58x = 424,539,726,346.80 - Step 5: Solve for x
x = 424,539,726,346.80/687,979.58 - Step 6: Final answer
x = 617,081.88
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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.