Finding the Fourth Proportional to 7,800,512.60, 11,686,772.10 and 6,680,768.60
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Solution
The fourth proportional to 7,800,512.60, 11,686,772.10 and 6,680,768.60 is: 10,009,165.31
Step by Step Solution
- Step 1: Write the proportion equation
7,800,512.60 : 11,686,772.10 = 6,680,768.60 : x - Step 2: Convert to fraction form
7,800,512.60/11,686,772.10 = 6,680,768.60/x - Step 3: Cross multiply
7,800,512.60x = 11,686,772.10 × 6,680,768.60 - Step 4: Simplify right side
7,800,512.60x = 78,076,620,081,036.05 - Step 5: Solve for x
x = 78,076,620,081,036.05/7,800,512.60 - Step 6: Final answer
x = 10,009,165.31
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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.