Finding the Fourth Proportional to 9,989,438.08, 13,785,424.48 and 5,405,759.44
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Solution
The fourth proportional to 9,989,438.08, 13,785,424.48 and 5,405,759.44 is: 7,459,947.99
Step by Step Solution
- Step 1: Write the proportion equation
9,989,438.08 : 13,785,424.48 = 5,405,759.44 : x - Step 2: Convert to fraction form
9,989,438.08/13,785,424.48 = 5,405,759.44/x - Step 3: Cross multiply
9,989,438.08x = 13,785,424.48 × 5,405,759.44 - Step 4: Simplify right side
9,989,438.08x = 74,520,688,517,167.09 - Step 5: Solve for x
x = 74,520,688,517,167.09/9,989,438.08 - Step 6: Final answer
x = 7,459,947.99
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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.