Finding the Fourth Proportional to 10,278,528.90, 15,417,793.35 and 6,479,693.70
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Solution
The fourth proportional to 10,278,528.90, 15,417,793.35 and 6,479,693.70 is: 9,719,540.55
Step by Step Solution
- Step 1: Write the proportion equation
10,278,528.90 : 15,417,793.35 = 6,479,693.70 : x - Step 2: Convert to fraction form
10,278,528.90/15,417,793.35 = 6,479,693.70/x - Step 3: Cross multiply
10,278,528.90x = 15,417,793.35 × 6,479,693.70 - Step 4: Simplify right side
10,278,528.90x = 99,902,578,437,896.89 - Step 5: Solve for x
x = 99,902,578,437,896.89/10,278,528.90 - Step 6: Final answer
x = 9,719,540.55
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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.