Finding the Fourth Proportional to 1,228,581.14, 1,696,306.47 and 861,837.98
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Solution
The fourth proportional to 1,228,581.14, 1,696,306.47 and 861,837.98 is: 1,189,942.85
Step by Step Solution
- Step 1: Write the proportion equation
1,228,581.14 : 1,696,306.47 = 861,837.98 : x - Step 2: Convert to fraction form
1,228,581.14/1,696,306.47 = 861,837.98/x - Step 3: Cross multiply
1,228,581.14x = 1,696,306.47 × 861,837.98 - Step 4: Simplify right side
1,228,581.14x = 1,461,941,341,565.73 - Step 5: Solve for x
x = 1,461,941,341,565.73/1,228,581.14 - Step 6: Final answer
x = 1,189,942.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.