Finding the Fourth Proportional to 4,120,989.61, 5,686,765.77 and 2,285,520.70
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Solution
The fourth proportional to 4,120,989.61, 5,686,765.77 and 2,285,520.70 is: 3,153,907.71
Step by Step Solution
- Step 1: Write the proportion equation
4,120,989.61 : 5,686,765.77 = 2,285,520.70 : x - Step 2: Convert to fraction form
4,120,989.61/5,686,765.77 = 2,285,520.70/x - Step 3: Cross multiply
4,120,989.61x = 5,686,765.77 × 2,285,520.70 - Step 4: Simplify right side
4,120,989.61x = 12,997,220,883,386.44 - Step 5: Solve for x
x = 12,997,220,883,386.44/4,120,989.61 - Step 6: Final answer
x = 3,153,907.71
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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.