Finding the Fourth Proportional to 987,753.12, 1,481,475.24 and 313,745.70
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Solution
The fourth proportional to 987,753.12, 1,481,475.24 and 313,745.70 is: 470,569.49
Step by Step Solution
- Step 1: Write the proportion equation
987,753.12 : 1,481,475.24 = 313,745.70 : x - Step 2: Convert to fraction form
987,753.12/1,481,475.24 = 313,745.70/x - Step 3: Cross multiply
987,753.12x = 1,481,475.24 × 313,745.70 - Step 4: Simplify right side
987,753.12x = 464,806,486,206.47 - Step 5: Solve for x
x = 464,806,486,206.47/987,753.12 - Step 6: Final answer
x = 470,569.49
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1.5x scale
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.