Finding the Fourth Proportional to 2,990,220.77, 4,124,784.99 and 1,887,260.09
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Solution
The fourth proportional to 2,990,220.77, 4,124,784.99 and 1,887,260.09 is: 2,603,333.56
Step by Step Solution
- Step 1: Write the proportion equation
2,990,220.77 : 4,124,784.99 = 1,887,260.09 : x - Step 2: Convert to fraction form
2,990,220.77/4,124,784.99 = 1,887,260.09/x - Step 3: Cross multiply
2,990,220.77x = 4,124,784.99 × 1,887,260.09 - Step 4: Simplify right side
2,990,220.77x = 7,784,542,070,834.12 - Step 5: Solve for x
x = 7,784,542,070,834.12/2,990,220.77 - Step 6: Final answer
x = 2,603,333.56
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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.