Finding the Fourth Proportional to 1,425,340.38, 2,138,321.88 and 478,686.36
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Solution
The fourth proportional to 1,425,340.38, 2,138,321.88 and 478,686.36 is: 718,134.09
Step by Step Solution
- Step 1: Write the proportion equation
1,425,340.38 : 2,138,321.88 = 478,686.36 : x - Step 2: Convert to fraction form
1,425,340.38/2,138,321.88 = 478,686.36/x - Step 3: Cross multiply
1,425,340.38x = 2,138,321.88 × 478,686.36 - Step 4: Simplify right side
1,425,340.38x = 1,023,585,517,245.56 - Step 5: Solve for x
x = 1,023,585,517,245.56/1,425,340.38 - Step 6: Final answer
x = 718,134.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.