Finding the Fourth Proportional to 905,049.36, 1,248,687.18 and 522,936.72
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Solution
The fourth proportional to 905,049.36, 1,248,687.18 and 522,936.72 is: 721,490.35
Step by Step Solution
- Step 1: Write the proportion equation
905,049.36 : 1,248,687.18 = 522,936.72 : x - Step 2: Convert to fraction form
905,049.36/1,248,687.18 = 522,936.72/x - Step 3: Cross multiply
905,049.36x = 1,248,687.18 × 522,936.72 - Step 4: Simplify right side
905,049.36x = 652,984,378,215.25 - Step 5: Solve for x
x = 652,984,378,215.25/905,049.36 - Step 6: Final answer
x = 721,490.35
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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.