Finding the Fourth Proportional to 628,889.78, 867,889.01 and 353,295.99
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Solution
The fourth proportional to 628,889.78, 867,889.01 and 353,295.99 is: 487,560.33
Step by Step Solution
- Step 1: Write the proportion equation
628,889.78 : 867,889.01 = 353,295.99 : x - Step 2: Convert to fraction form
628,889.78/867,889.01 = 353,295.99/x - Step 3: Cross multiply
628,889.78x = 867,889.01 × 353,295.99 - Step 4: Simplify right side
628,889.78x = 306,621,706,998.07 - Step 5: Solve for x
x = 306,621,706,998.07/628,889.78 - Step 6: Final answer
x = 487,560.33
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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.