Finding the Fourth Proportional to 642,603.68, 886,777.98 and 356,117.61
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Solution
The fourth proportional to 642,603.68, 886,777.98 and 356,117.61 is: 491,433.94
Step by Step Solution
- Step 1: Write the proportion equation
642,603.68 : 886,777.98 = 356,117.61 : x - Step 2: Convert to fraction form
642,603.68/886,777.98 = 356,117.61/x - Step 3: Cross multiply
642,603.68x = 886,777.98 × 356,117.61 - Step 4: Simplify right side
642,603.68x = 315,797,254,838.23 - Step 5: Solve for x
x = 315,797,254,838.23/642,603.68 - Step 6: Final answer
x = 491,433.94
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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.