Finding the Fourth Proportional to 9,989,452.28, 13,785,444.20 and 5,405,773.70
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Solution
The fourth proportional to 9,989,452.28, 13,785,444.20 and 5,405,773.70 is: 7,459,967.74
Step by Step Solution
- Step 1: Write the proportion equation
9,989,452.28 : 13,785,444.20 = 5,405,773.70 : x - Step 2: Convert to fraction form
9,989,452.28/13,785,444.20 = 5,405,773.70/x - Step 3: Cross multiply
9,989,452.28x = 13,785,444.20 × 5,405,773.70 - Step 4: Simplify right side
9,989,452.28x = 74,520,991,699,177.53 - Step 5: Solve for x
x = 74,520,991,699,177.53/9,989,452.28 - Step 6: Final answer
x = 7,459,967.74
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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.