Finding the Fourth Proportional to 811,726.12, 1,120,105.76 and 549,548.09
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Solution
The fourth proportional to 811,726.12, 1,120,105.76 and 549,548.09 is: 758,324.72
Step by Step Solution
- Step 1: Write the proportion equation
811,726.12 : 1,120,105.76 = 549,548.09 : x - Step 2: Convert to fraction form
811,726.12/1,120,105.76 = 549,548.09/x - Step 3: Cross multiply
811,726.12x = 1,120,105.76 × 549,548.09 - Step 4: Simplify right side
811,726.12x = 615,551,984,672.26 - Step 5: Solve for x
x = 615,551,984,672.26/811,726.12 - Step 6: Final answer
x = 758,324.72
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1.5x scale
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.