Finding the Fourth Proportional to 561,431.88, 774,777.99 and 306,783.07
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Solution
The fourth proportional to 561,431.88, 774,777.99 and 306,783.07 is: 423,361.73
Step by Step Solution
- Step 1: Write the proportion equation
561,431.88 : 774,777.99 = 306,783.07 : x - Step 2: Convert to fraction form
561,431.88/774,777.99 = 306,783.07/x - Step 3: Cross multiply
561,431.88x = 774,777.99 × 306,783.07 - Step 4: Simplify right side
561,431.88x = 237,688,770,340.63 - Step 5: Solve for x
x = 237,688,770,340.63/561,431.88 - Step 6: Final answer
x = 423,361.73
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1.5x scale
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.