Finding the Fourth Proportional to 711,649.38, 981,979.16 and 425,108.64
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Solution
The fourth proportional to 711,649.38, 981,979.16 and 425,108.64 is: 586,591.99
Step by Step Solution
- Step 1: Write the proportion equation
711,649.38 : 981,979.16 = 425,108.64 : x - Step 2: Convert to fraction form
711,649.38/981,979.16 = 425,108.64/x - Step 3: Cross multiply
711,649.38x = 981,979.16 × 425,108.64 - Step 4: Simplify right side
711,649.38x = 417,447,823,090.40 - Step 5: Solve for x
x = 417,447,823,090.40/711,649.38 - Step 6: Final answer
x = 586,591.99
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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.