Finding the Fourth Proportional to 1,018,639.18, 1,405,805.79 and 656,816.23
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Solution
The fourth proportional to 1,018,639.18, 1,405,805.79 and 656,816.23 is: 906,460.38
Step by Step Solution
- Step 1: Write the proportion equation
1,018,639.18 : 1,405,805.79 = 656,816.23 : x - Step 2: Convert to fraction form
1,018,639.18/1,405,805.79 = 656,816.23/x - Step 3: Cross multiply
1,018,639.18x = 1,405,805.79 × 656,816.23 - Step 4: Simplify right side
1,018,639.18x = 923,356,059,099.97 - Step 5: Solve for x
x = 923,356,059,099.97/1,018,639.18 - Step 6: Final answer
x = 906,460.38
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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.