Finding the Fourth Proportional to 1,387,472.80, 2,081,266.80 and 440,816.80
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Solution
The fourth proportional to 1,387,472.80, 2,081,266.80 and 440,816.80 is: 661,243.50
Step by Step Solution
- Step 1: Write the proportion equation
1,387,472.80 : 2,081,266.80 = 440,816.80 : x - Step 2: Convert to fraction form
1,387,472.80/2,081,266.80 = 440,816.80/x - Step 3: Cross multiply
1,387,472.80x = 2,081,266.80 × 440,816.80 - Step 4: Simplify right side
1,387,472.80x = 917,457,370,722.24 - Step 5: Solve for x
x = 917,457,370,722.24/1,387,472.80 - Step 6: Final answer
x = 661,243.50
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1.5x scale
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.