Finding the Fourth Proportional to 2,475,978.19, 3,416,806.42 and 1,388,246.40
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Solution
The fourth proportional to 2,475,978.19, 3,416,806.42 and 1,388,246.40 is: 1,915,755.65
Step by Step Solution
- Step 1: Write the proportion equation
2,475,978.19 : 3,416,806.42 = 1,388,246.40 : x - Step 2: Convert to fraction form
2,475,978.19/3,416,806.42 = 1,388,246.40/x - Step 3: Cross multiply
2,475,978.19x = 3,416,806.42 × 1,388,246.40 - Step 4: Simplify right side
2,475,978.19x = 4,743,369,208,591.27 - Step 5: Solve for x
x = 4,743,369,208,591.27/2,475,978.19 - Step 6: Final answer
x = 1,915,755.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.