Finding the Fourth Proportional to 2,918,831.20, 4,378,246.80 and 2,456,936.80
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Solution
The fourth proportional to 2,918,831.20, 4,378,246.80 and 2,456,936.80 is: 3,685,405.20
Step by Step Solution
- Step 1: Write the proportion equation
2,918,831.20 : 4,378,246.80 = 2,456,936.80 : x - Step 2: Convert to fraction form
2,918,831.20/4,378,246.80 = 2,456,936.80/x - Step 3: Cross multiply
2,918,831.20x = 4,378,246.80 × 2,456,936.80 - Step 4: Simplify right side
2,918,831.20x = 10,757,075,682,402.24 - Step 5: Solve for x
x = 10,757,075,682,402.24/2,918,831.20 - Step 6: Final answer
x = 3,685,405.20
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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.