Finding the Fourth Proportional to 7,911,739.80, 11,867,609.70 and 1,928,107.80
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Solution
The fourth proportional to 7,911,739.80, 11,867,609.70 and 1,928,107.80 is: 2,892,161.70
Step by Step Solution
- Step 1: Write the proportion equation
7,911,739.80 : 11,867,609.70 = 1,928,107.80 : x - Step 2: Convert to fraction form
7,911,739.80/11,867,609.70 = 1,928,107.80/x - Step 3: Cross multiply
7,911,739.80x = 11,867,609.70 × 1,928,107.80 - Step 4: Simplify right side
7,911,739.80x = 22,882,030,829,925.66 - Step 5: Solve for x
x = 22,882,030,829,925.66/7,911,739.80 - Step 6: Final answer
x = 2,892,161.70
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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.