Finding the Fourth Proportional to 657,049.68, 906,728.55 and 355,243.68
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Solution
The fourth proportional to 657,049.68, 906,728.55 and 355,243.68 is: 490,236.27
Step by Step Solution
- Step 1: Write the proportion equation
657,049.68 : 906,728.55 = 355,243.68 : x - Step 2: Convert to fraction form
657,049.68/906,728.55 = 355,243.68/x - Step 3: Cross multiply
657,049.68x = 906,728.55 × 355,243.68 - Step 4: Simplify right side
657,049.68x = 322,109,586,863.06 - Step 5: Solve for x
x = 322,109,586,863.06/657,049.68 - Step 6: Final answer
x = 490,236.27
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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.