Finding the Fourth Proportional to 813,321.81, 1,122,370.43 and 445,796.06
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Solution
The fourth proportional to 813,321.81, 1,122,370.43 and 445,796.06 is: 615,191.06
Step by Step Solution
- Step 1: Write the proportion equation
813,321.81 : 1,122,370.43 = 445,796.06 : x - Step 2: Convert to fraction form
813,321.81/1,122,370.43 = 445,796.06/x - Step 3: Cross multiply
813,321.81x = 1,122,370.43 × 445,796.06 - Step 4: Simplify right side
813,321.81x = 500,348,307,713.67 - Step 5: Solve for x
x = 500,348,307,713.67/813,321.81 - Step 6: Final answer
x = 615,191.06
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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.