Finding the Fourth Proportional to 863,826.36, 1,190,466.12 and 621,688.56
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Solution
The fourth proportional to 863,826.36, 1,190,466.12 and 621,688.56 is: 856,768.45
Step by Step Solution
- Step 1: Write the proportion equation
863,826.36 : 1,190,466.12 = 621,688.56 : x - Step 2: Convert to fraction form
863,826.36/1,190,466.12 = 621,688.56/x - Step 3: Cross multiply
863,826.36x = 1,190,466.12 × 621,688.56 - Step 4: Simplify right side
863,826.36x = 740,099,167,871.59 - Step 5: Solve for x
x = 740,099,167,871.59/863,826.36 - Step 6: Final answer
x = 856,768.45
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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.