Finding the Fourth Proportional to 665,497.20, 998,245.80 and 547,399.20
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Solution
The fourth proportional to 665,497.20, 998,245.80 and 547,399.20 is: 821,098.80
Step by Step Solution
- Step 1: Write the proportion equation
665,497.20 : 998,245.80 = 547,399.20 : x - Step 2: Convert to fraction form
665,497.20/998,245.80 = 547,399.20/x - Step 3: Cross multiply
665,497.20x = 998,245.80 × 547,399.20 - Step 4: Simplify right side
665,497.20x = 546,438,952,323.36 - Step 5: Solve for x
x = 546,438,952,323.36/665,497.20 - Step 6: Final answer
x = 821,098.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.