Finding the Fourth Proportional to 1,387,882.24, 2,080,216.96 and 638,355.20
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Solution
The fourth proportional to 1,387,882.24, 2,080,216.96 and 638,355.20 is: 956,793.94
Step by Step Solution
- Step 1: Write the proportion equation
1,387,882.24 : 2,080,216.96 = 638,355.20 : x - Step 2: Convert to fraction form
1,387,882.24/2,080,216.96 = 638,355.20/x - Step 3: Cross multiply
1,387,882.24x = 2,080,216.96 × 638,355.20 - Step 4: Simplify right side
1,387,882.24x = 1,327,917,313,544.19 - Step 5: Solve for x
x = 1,327,917,313,544.19/1,387,882.24 - Step 6: Final answer
x = 956,793.94
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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.