Finding the Fourth Proportional to 469,421.98, 647,754.70 and 288,141.54
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Solution
The fourth proportional to 469,421.98, 647,754.70 and 288,141.54 is: 397,606.09
Step by Step Solution
- Step 1: Write the proportion equation
469,421.98 : 647,754.70 = 288,141.54 : x - Step 2: Convert to fraction form
469,421.98/647,754.70 = 288,141.54/x - Step 3: Cross multiply
469,421.98x = 647,754.70 × 288,141.54 - Step 4: Simplify right side
469,421.98x = 186,645,036,800.24 - Step 5: Solve for x
x = 186,645,036,800.24/469,421.98 - Step 6: Final answer
x = 397,606.09
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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.