Finding the Fourth Proportional to 1,438,562.70, 2,159,010.45 and 1,391,906.70
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Solution
The fourth proportional to 1,438,562.70, 2,159,010.45 and 1,391,906.70 is: 2,088,988.62
Step by Step Solution
- Step 1: Write the proportion equation
1,438,562.70 : 2,159,010.45 = 1,391,906.70 : x - Step 2: Convert to fraction form
1,438,562.70/2,159,010.45 = 1,391,906.70/x - Step 3: Cross multiply
1,438,562.70x = 2,159,010.45 × 1,391,906.70 - Step 4: Simplify right side
1,438,562.70x = 3,005,141,110,725.02 - Step 5: Solve for x
x = 3,005,141,110,725.02/1,438,562.70 - Step 6: Final answer
x = 2,088,988.62
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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.