Finding the Fourth Proportional to 490,429.74, 676,873.26 and 408,628.20
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Solution
The fourth proportional to 490,429.74, 676,873.26 and 408,628.20 is: 563,973.75
Step by Step Solution
- Step 1: Write the proportion equation
490,429.74 : 676,873.26 = 408,628.20 : x - Step 2: Convert to fraction form
490,429.74/676,873.26 = 408,628.20/x - Step 3: Cross multiply
490,429.74x = 676,873.26 × 408,628.20 - Step 4: Simplify right side
490,429.74x = 276,589,501,861.93 - Step 5: Solve for x
x = 276,589,501,861.93/490,429.74 - Step 6: Final answer
x = 563,973.75
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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.