Finding the Fourth Proportional to 7,045,831.12, 9,723,846.60 and 3,990,588.88
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Solution
The fourth proportional to 7,045,831.12, 9,723,846.60 and 3,990,588.88 is: 5,507,352.28
Step by Step Solution
- Step 1: Write the proportion equation
7,045,831.12 : 9,723,846.60 = 3,990,588.88 : x - Step 2: Convert to fraction form
7,045,831.12/9,723,846.60 = 3,990,588.88/x - Step 3: Cross multiply
7,045,831.12x = 9,723,846.60 × 3,990,588.88 - Step 4: Simplify right side
7,045,831.12x = 38,803,874,112,785.80 - Step 5: Solve for x
x = 38,803,874,112,785.80/7,045,831.12 - Step 6: Final answer
x = 5,507,352.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.