Finding the Fourth Proportional to 8,789,130.42, 12,128,868.18 and 4,868,874.14
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Solution
The fourth proportional to 8,789,130.42, 12,128,868.18 and 4,868,874.14 is: 6,718,973.29
Step by Step Solution
- Step 1: Write the proportion equation
8,789,130.42 : 12,128,868.18 = 4,868,874.14 : x - Step 2: Convert to fraction form
8,789,130.42/12,128,868.18 = 4,868,874.14/x - Step 3: Cross multiply
8,789,130.42x = 12,128,868.18 × 4,868,874.14 - Step 4: Simplify right side
8,789,130.42x = 59,053,932,568,426.52 - Step 5: Solve for x
x = 59,053,932,568,426.52/8,789,130.42 - Step 6: Final answer
x = 6,718,973.29
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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.