Finding the Fourth Proportional to 2,719,129.20, 4,078,564.20 and 921,836.40
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Solution
The fourth proportional to 2,719,129.20, 4,078,564.20 and 921,836.40 is: 1,382,710.66
Step by Step Solution
- Step 1: Write the proportion equation
2,719,129.20 : 4,078,564.20 = 921,836.40 : x - Step 2: Convert to fraction form
2,719,129.20/4,078,564.20 = 921,836.40/x - Step 3: Cross multiply
2,719,129.20x = 4,078,564.20 × 921,836.40 - Step 4: Simplify right side
2,719,129.20x = 3,759,768,939,296.88 - Step 5: Solve for x
x = 3,759,768,939,296.88/2,719,129.20 - Step 6: Final answer
x = 1,382,710.66
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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.