Finding the Fourth Proportional to 1,294,411.62, 1,786,349.16 and 721,455.96
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Solution
The fourth proportional to 1,294,411.62, 1,786,349.16 and 721,455.96 is: 995,643.29
Step by Step Solution
- Step 1: Write the proportion equation
1,294,411.62 : 1,786,349.16 = 721,455.96 : x - Step 2: Convert to fraction form
1,294,411.62/1,786,349.16 = 721,455.96/x - Step 3: Cross multiply
1,294,411.62x = 1,786,349.16 × 721,455.96 - Step 4: Simplify right side
1,294,411.62x = 1,288,772,248,122.99 - Step 5: Solve for x
x = 1,288,772,248,122.99/1,294,411.62 - Step 6: Final answer
x = 995,643.29
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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.