Finding the Fourth Proportional to 643,212.18, 887,675.49 and 356,744.34
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Solution
The fourth proportional to 643,212.18, 887,675.49 and 356,744.34 is: 492,330.86
Step by Step Solution
- Step 1: Write the proportion equation
643,212.18 : 887,675.49 = 356,744.34 : x - Step 2: Convert to fraction form
643,212.18/887,675.49 = 356,744.34/x - Step 3: Cross multiply
643,212.18x = 887,675.49 × 356,744.34 - Step 4: Simplify right side
643,212.18x = 316,673,206,814.23 - Step 5: Solve for x
x = 316,673,206,814.23/643,212.18 - Step 6: Final answer
x = 492,330.86
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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.