Finding the Fourth Proportional to 1,587,057.44, 2,190,138.75 and 861,905.34
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Solution
The fourth proportional to 1,587,057.44, 2,190,138.75 and 861,905.34 is: 1,189,429.09
Step by Step Solution
- Step 1: Write the proportion equation
1,587,057.44 : 2,190,138.75 = 861,905.34 : x - Step 2: Convert to fraction form
1,587,057.44/2,190,138.75 = 861,905.34/x - Step 3: Cross multiply
1,587,057.44x = 2,190,138.75 × 861,905.34 - Step 4: Simplify right side
1,587,057.44x = 1,887,692,283,965.93 - Step 5: Solve for x
x = 1,887,692,283,965.93/1,587,057.44 - Step 6: Final answer
x = 1,189,429.09
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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.