Finding the Fourth Proportional to 1,387,574.28, 2,081,329.02 and 639,620.28
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Solution
The fourth proportional to 1,387,574.28, 2,081,329.02 and 639,620.28 is: 959,415.48
Step by Step Solution
- Step 1: Write the proportion equation
1,387,574.28 : 2,081,329.02 = 639,620.28 : x - Step 2: Convert to fraction form
1,387,574.28/2,081,329.02 = 639,620.28/x - Step 3: Cross multiply
1,387,574.28x = 2,081,329.02 × 639,620.28 - Step 4: Simplify right side
1,387,574.28x = 1,331,260,250,544.53 - Step 5: Solve for x
x = 1,331,260,250,544.53/1,387,574.28 - Step 6: Final answer
x = 959,415.48
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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.