Finding the Fourth Proportional to 628,887.78, 867,886.25 and 353,293.99
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Solution
The fourth proportional to 628,887.78, 867,886.25 and 353,293.99 is: 487,557.56
Step by Step Solution
- Step 1: Write the proportion equation
628,887.78 : 867,886.25 = 353,293.99 : x - Step 2: Convert to fraction form
628,887.78/867,886.25 = 353,293.99/x - Step 3: Cross multiply
628,887.78x = 867,886.25 × 353,293.99 - Step 4: Simplify right side
628,887.78x = 306,618,992,192.45 - Step 5: Solve for x
x = 306,618,992,192.45/628,887.78 - Step 6: Final answer
x = 487,557.56
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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.