Finding the Fourth Proportional to 628,163.31, 867,019.35 and 356,390.31
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Solution
The fourth proportional to 628,163.31, 867,019.35 and 356,390.31 is: 491,905.99
Step by Step Solution
- Step 1: Write the proportion equation
628,163.31 : 867,019.35 = 356,390.31 : x - Step 2: Convert to fraction form
628,163.31/867,019.35 = 356,390.31/x - Step 3: Cross multiply
628,163.31x = 867,019.35 × 356,390.31 - Step 4: Simplify right side
628,163.31x = 308,997,294,922.50 - Step 5: Solve for x
x = 308,997,294,922.50/628,163.31 - Step 6: Final answer
x = 491,905.99
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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.