Finding the Fourth Proportional to 10,422,077.20, 15,633,115.80 and 6,440,765.20
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Solution
The fourth proportional to 10,422,077.20, 15,633,115.80 and 6,440,765.20 is: 9,661,147.80
Step by Step Solution
- Step 1: Write the proportion equation
10,422,077.20 : 15,633,115.80 = 6,440,765.20 : x - Step 2: Convert to fraction form
10,422,077.20/15,633,115.80 = 6,440,765.20/x - Step 3: Cross multiply
10,422,077.20x = 15,633,115.80 × 6,440,765.20 - Step 4: Simplify right side
10,422,077.20x = 100,689,228,212,210.17 - Step 5: Solve for x
x = 100,689,228,212,210.17/10,422,077.20 - Step 6: Final answer
x = 9,661,147.80
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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.