Finding the Fourth Proportional to 1,387,954.70, 2,081,932.05 and 441,421.10
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Solution
The fourth proportional to 1,387,954.70, 2,081,932.05 and 441,421.10 is: 662,131.65
Step by Step Solution
- Step 1: Write the proportion equation
1,387,954.70 : 2,081,932.05 = 441,421.10 : x - Step 2: Convert to fraction form
1,387,954.70/2,081,932.05 = 441,421.10/x - Step 3: Cross multiply
1,387,954.70x = 2,081,932.05 × 441,421.10 - Step 4: Simplify right side
1,387,954.70x = 919,008,735,636.26 - Step 5: Solve for x
x = 919,008,735,636.26/1,387,954.70 - Step 6: Final answer
x = 662,131.65
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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.