Finding the Fourth Proportional to 639,647.87, 881,662.84 and 453,442.79
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Solution
The fourth proportional to 639,647.87, 881,662.84 and 453,442.79 is: 625,005.85
Step by Step Solution
- Step 1: Write the proportion equation
639,647.87 : 881,662.84 = 453,442.79 : x - Step 2: Convert to fraction form
639,647.87/881,662.84 = 453,442.79/x - Step 3: Cross multiply
639,647.87x = 881,662.84 × 453,442.79 - Step 4: Simplify right side
639,647.87x = 399,783,659,079.47 - Step 5: Solve for x
x = 399,783,659,079.47/639,647.87 - Step 6: Final answer
x = 625,005.85
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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.