Finding the Fourth Proportional to 1,238,103.07, 1,707,858.37 and 778,489.99
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Solution
The fourth proportional to 1,238,103.07, 1,707,858.37 and 778,489.99 is: 1,073,861.03
Step by Step Solution
- Step 1: Write the proportion equation
1,238,103.07 : 1,707,858.37 = 778,489.99 : x - Step 2: Convert to fraction form
1,238,103.07/1,707,858.37 = 778,489.99/x - Step 3: Cross multiply
1,238,103.07x = 1,707,858.37 × 778,489.99 - Step 4: Simplify right side
1,238,103.07x = 1,329,550,642,086.18 - Step 5: Solve for x
x = 1,329,550,642,086.18/1,238,103.07 - Step 6: Final answer
x = 1,073,861.03
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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.