Finding the Fourth Proportional to 10,405,987.20, 14,350,720.68 and 8,935,395.62
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Solution
The fourth proportional to 10,405,987.20, 14,350,720.68 and 8,935,395.62 is: 12,322,652.74
Step by Step Solution
- Step 1: Write the proportion equation
10,405,987.20 : 14,350,720.68 = 8,935,395.62 : x - Step 2: Convert to fraction form
10,405,987.20/14,350,720.68 = 8,935,395.62/x - Step 3: Cross multiply
10,405,987.20x = 14,350,720.68 × 8,935,395.62 - Step 4: Simplify right side
10,405,987.20x = 128,229,366,707,915.41 - Step 5: Solve for x
x = 128,229,366,707,915.41/10,405,987.20 - Step 6: Final answer
x = 12,322,652.74
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1.5x scale
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.