Finding the Fourth Proportional to 561,403.36, 774,735.84 and 319,685.99
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Solution
The fourth proportional to 561,403.36, 774,735.84 and 319,685.99 is: 441,166.22
Step by Step Solution
- Step 1: Write the proportion equation
561,403.36 : 774,735.84 = 319,685.99 : x - Step 2: Convert to fraction form
561,403.36/774,735.84 = 319,685.99/x - Step 3: Cross multiply
561,403.36x = 774,735.84 × 319,685.99 - Step 4: Simplify right side
561,403.36x = 247,672,194,483.09 - Step 5: Solve for x
x = 247,672,194,483.09/561,403.36 - Step 6: Final answer
x = 441,166.22
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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.