Finding the Fourth Proportional to 10,930,991.20, 16,403,485.20 and 6,382,031.20
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Solution
The fourth proportional to 10,930,991.20, 16,403,485.20 and 6,382,031.20 is: 9,577,132.80
Step by Step Solution
- Step 1: Write the proportion equation
10,930,991.20 : 16,403,485.20 = 6,382,031.20 : x - Step 2: Convert to fraction form
10,930,991.20/16,403,485.20 = 6,382,031.20/x - Step 3: Cross multiply
10,930,991.20x = 16,403,485.20 × 6,382,031.20 - Step 4: Simplify right side
10,930,991.20x = 104,687,554,335,138.23 - Step 5: Solve for x
x = 104,687,554,335,138.23/10,930,991.20 - Step 6: Final answer
x = 9,577,132.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.