Finding the Fourth Proportional to 7,383,831.20, 11,075,746.80 and 6,388,503.20
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Solution
The fourth proportional to 7,383,831.20, 11,075,746.80 and 6,388,503.20 is: 9,582,754.80
Step by Step Solution
- Step 1: Write the proportion equation
7,383,831.20 : 11,075,746.80 = 6,388,503.20 : x - Step 2: Convert to fraction form
7,383,831.20/11,075,746.80 = 6,388,503.20/x - Step 3: Cross multiply
7,383,831.20x = 11,075,746.80 × 6,388,503.20 - Step 4: Simplify right side
7,383,831.20x = 70,757,443,874,189.77 - Step 5: Solve for x
x = 70,757,443,874,189.77/7,383,831.20 - Step 6: Final answer
x = 9,582,754.80
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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.