Finding the Fourth Proportional to 790,257.28, 1,090,543.84 and 450,731.20
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Solution
The fourth proportional to 790,257.28, 1,090,543.84 and 450,731.20 is: 622,002.66
Step by Step Solution
- Step 1: Write the proportion equation
790,257.28 : 1,090,543.84 = 450,731.20 : x - Step 2: Convert to fraction form
790,257.28/1,090,543.84 = 450,731.20/x - Step 3: Cross multiply
790,257.28x = 1,090,543.84 × 450,731.20 - Step 4: Simplify right side
790,257.28x = 491,542,133,655.81 - Step 5: Solve for x
x = 491,542,133,655.81/790,257.28 - Step 6: Final answer
x = 622,002.66
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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.