Finding the Fourth Proportional to 1,129,707.97, 1,558,420.53 and 721,380.49
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Solution
The fourth proportional to 1,129,707.97, 1,558,420.53 and 721,380.49 is: 995,136.97
Step by Step Solution
- Step 1: Write the proportion equation
1,129,707.97 : 1,558,420.53 = 721,380.49 : x - Step 2: Convert to fraction form
1,129,707.97/1,558,420.53 = 721,380.49/x - Step 3: Cross multiply
1,129,707.97x = 1,558,420.53 × 721,380.49 - Step 4: Simplify right side
1,129,707.97x = 1,124,214,163,339.29 - Step 5: Solve for x
x = 1,124,214,163,339.29/1,129,707.97 - Step 6: Final answer
x = 995,136.97
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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.