Finding the Fourth Proportional to 643,163.49, 887,543.31 and 356,710.23
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Solution
The fourth proportional to 643,163.49, 887,543.31 and 356,710.23 is: 492,247.75
Step by Step Solution
- Step 1: Write the proportion equation
643,163.49 : 887,543.31 = 356,710.23 : x - Step 2: Convert to fraction form
643,163.49/887,543.31 = 356,710.23/x - Step 3: Cross multiply
643,163.49x = 887,543.31 × 356,710.23 - Step 4: Simplify right side
643,163.49x = 316,595,778,245.06 - Step 5: Solve for x
x = 316,595,778,245.06/643,163.49 - Step 6: Final answer
x = 492,247.75
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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.