Finding the Fourth Proportional to 10,509,276.80, 15,763,915.20 and 9,658,971.20
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Solution
The fourth proportional to 10,509,276.80, 15,763,915.20 and 9,658,971.20 is: 14,488,456.80
Step by Step Solution
- Step 1: Write the proportion equation
10,509,276.80 : 15,763,915.20 = 9,658,971.20 : x - Step 2: Convert to fraction form
10,509,276.80/15,763,915.20 = 9,658,971.20/x - Step 3: Cross multiply
10,509,276.80x = 15,763,915.20 × 9,658,971.20 - Step 4: Simplify right side
10,509,276.80x = 152,263,202,916,042.22 - Step 5: Solve for x
x = 152,263,202,916,042.22/10,509,276.80 - Step 6: Final answer
x = 14,488,456.80
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1.5x scale
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.