Finding the Fourth Proportional to 783,076.05, 1,174,614.08 and 428,782.05
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Solution
The fourth proportional to 783,076.05, 1,174,614.08 and 428,782.05 is: 643,173.08
Step by Step Solution
- Step 1: Write the proportion equation
783,076.05 : 1,174,614.08 = 428,782.05 : x - Step 2: Convert to fraction form
783,076.05/1,174,614.08 = 428,782.05/x - Step 3: Cross multiply
783,076.05x = 1,174,614.08 × 428,782.05 - Step 4: Simplify right side
783,076.05x = 503,653,431,037.35 - Step 5: Solve for x
x = 503,653,431,037.35/783,076.05 - Step 6: Final answer
x = 643,173.08
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.