Finding the Fourth Proportional to 7,772,720.46, 10,720,800.27 and 6,738,378.72
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Solution
The fourth proportional to 7,772,720.46, 10,720,800.27 and 6,738,378.72 is: 9,294,147.75
Step by Step Solution
- Step 1: Write the proportion equation
7,772,720.46 : 10,720,800.27 = 6,738,378.72 : x - Step 2: Convert to fraction form
7,772,720.46/10,720,800.27 = 6,738,378.72/x - Step 3: Cross multiply
7,772,720.46x = 10,720,800.27 × 6,738,378.72 - Step 4: Simplify right side
7,772,720.46x = 72,240,812,400,738.25 - Step 5: Solve for x
x = 72,240,812,400,738.25/7,772,720.46 - Step 6: Final answer
x = 9,294,147.75
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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.