Finding the Fourth Proportional to 987,412.09, 1,481,107.20 and 313,475.28
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Solution
The fourth proportional to 987,412.09, 1,481,107.20 and 313,475.28 is: 470,209.45
Step by Step Solution
- Step 1: Write the proportion equation
987,412.09 : 1,481,107.20 = 313,475.28 : x - Step 2: Convert to fraction form
987,412.09/1,481,107.20 = 313,475.28/x - Step 3: Cross multiply
987,412.09x = 1,481,107.20 × 313,475.28 - Step 4: Simplify right side
987,412.09x = 464,290,494,230.02 - Step 5: Solve for x
x = 464,290,494,230.02/987,412.09 - Step 6: Final answer
x = 470,209.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.