Finding the Fourth Proportional to 765,527.37, 1,056,419.40 and 421,355.94
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Solution
The fourth proportional to 765,527.37, 1,056,419.40 and 421,355.94 is: 581,466.59
Step by Step Solution
- Step 1: Write the proportion equation
765,527.37 : 1,056,419.40 = 421,355.94 : x - Step 2: Convert to fraction form
765,527.37/1,056,419.40 = 421,355.94/x - Step 3: Cross multiply
765,527.37x = 1,056,419.40 × 421,355.94 - Step 4: Simplify right side
765,527.37x = 445,128,589,321.24 - Step 5: Solve for x
x = 445,128,589,321.24/765,527.37 - Step 6: Final answer
x = 581,466.59
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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.