Finding the Fourth Proportional to 12,948,489.60, 19,425,067.20 and 5,376,220.80
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Solution
The fourth proportional to 12,948,489.60, 19,425,067.20 and 5,376,220.80 is: 8,065,299.78
Step by Step Solution
- Step 1: Write the proportion equation
12,948,489.60 : 19,425,067.20 = 5,376,220.80 : x - Step 2: Convert to fraction form
12,948,489.60/19,425,067.20 = 5,376,220.80/x - Step 3: Cross multiply
12,948,489.60x = 19,425,067.20 × 5,376,220.80 - Step 4: Simplify right side
12,948,489.60x = 104,433,450,322,037.75 - Step 5: Solve for x
x = 104,433,450,322,037.75/12,948,489.60 - Step 6: Final answer
x = 8,065,299.78
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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.