Finding the Fourth Proportional to 1,214,388,949.92, 1,821,694,591.28 and 340,984,432.96
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Solution
The fourth proportional to 1,214,388,949.92, 1,821,694,591.28 and 340,984,432.96 is: 511,507,863.50
Step by Step Solution
- Step 1: Write the proportion equation
1,214,388,949.92 : 1,821,694,591.28 = 340,984,432.96 : x - Step 2: Convert to fraction form
1,214,388,949.92/1,821,694,591.28 = 340,984,432.96/x - Step 3: Cross multiply
1,214,388,949.92x = 1,821,694,591.28 × 340,984,432.96 - Step 4: Simplify right side
1,214,388,949.92x = 621,169,497,233,909,760 - Step 5: Solve for x
x = 621,169,497,233,909,760/1,214,388,949.92 - Step 6: Final answer
x = 511,507,863.50
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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.