Finding the Fourth Proportional to 1,293,489.99, 1,785,071.42 and 720,530.55
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Solution
The fourth proportional to 1,293,489.99, 1,785,071.42 and 720,530.55 is: 994,362.92
Step by Step Solution
- Step 1: Write the proportion equation
1,293,489.99 : 1,785,071.42 = 720,530.55 : x - Step 2: Convert to fraction form
1,293,489.99/1,785,071.42 = 720,530.55/x - Step 3: Cross multiply
1,293,489.99x = 1,785,071.42 × 720,530.55 - Step 4: Simplify right side
1,293,489.99x = 1,286,198,488,439.23 - Step 5: Solve for x
x = 1,286,198,488,439.23/1,293,489.99 - Step 6: Final answer
x = 994,362.92
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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.