Finding the Fourth Proportional to 9,989,562.49, 13,785,595.79 and 5,405,883.99
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Solution
The fourth proportional to 9,989,562.49, 13,785,595.79 and 5,405,883.99 is: 7,460,119.66
Step by Step Solution
- Step 1: Write the proportion equation
9,989,562.49 : 13,785,595.79 = 5,405,883.99 : x - Step 2: Convert to fraction form
9,989,562.49/13,785,595.79 = 5,405,883.99/x - Step 3: Cross multiply
9,989,562.49x = 13,785,595.79 × 5,405,883.99 - Step 4: Simplify right side
9,989,562.49x = 74,523,331,546,742.98 - Step 5: Solve for x
x = 74,523,331,546,742.98/9,989,562.49 - Step 6: Final answer
x = 7,460,119.66
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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.