Finding the Fourth Proportional to 878,621.74, 1,212,610.30 and 491,458.68
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Solution
The fourth proportional to 878,621.74, 1,212,610.30 and 491,458.68 is: 678,275.79
Step by Step Solution
- Step 1: Write the proportion equation
878,621.74 : 1,212,610.30 = 491,458.68 : x - Step 2: Convert to fraction form
878,621.74/1,212,610.30 = 491,458.68/x - Step 3: Cross multiply
878,621.74x = 1,212,610.30 × 491,458.68 - Step 4: Simplify right side
878,621.74x = 595,947,854,458.52 - Step 5: Solve for x
x = 595,947,854,458.52/878,621.74 - Step 6: Final answer
x = 678,275.79
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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.