Finding the Fourth Proportional to 9,988,880.68, 13,784,679.30 and 5,405,251.24
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Solution
The fourth proportional to 9,988,880.68, 13,784,679.30 and 5,405,251.24 is: 7,459,259.68
Step by Step Solution
- Step 1: Write the proportion equation
9,988,880.68 : 13,784,679.30 = 5,405,251.24 : x - Step 2: Convert to fraction form
9,988,880.68/13,784,679.30 = 5,405,251.24/x - Step 3: Cross multiply
9,988,880.68x = 13,784,679.30 × 5,405,251.24 - Step 4: Simplify right side
9,988,880.68x = 74,509,654,879,327.34 - Step 5: Solve for x
x = 74,509,654,879,327.34/9,988,880.68 - Step 6: Final answer
x = 7,459,259.68
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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.