Finding the Fourth Proportional to 643,754.66, 888,370.35 and 357,286.82
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Solution
The fourth proportional to 643,754.66, 888,370.35 and 357,286.82 is: 493,049.66
Step by Step Solution
- Step 1: Write the proportion equation
643,754.66 : 888,370.35 = 357,286.82 : x - Step 2: Convert to fraction form
643,754.66/888,370.35 = 357,286.82/x - Step 3: Cross multiply
643,754.66x = 888,370.35 × 357,286.82 - Step 4: Simplify right side
643,754.66x = 317,403,017,333.79 - Step 5: Solve for x
x = 317,403,017,333.79/643,754.66 - Step 6: Final answer
x = 493,049.66
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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.