Finding the Fourth Proportional to 3,929,533,579.80, 5,422,728,264.84 and 2,145,386,977.56
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Solution
The fourth proportional to 3,929,533,579.80, 5,422,728,264.84 and 2,145,386,977.56 is: 2,960,618,700.92
Step by Step Solution
- Step 1: Write the proportion equation
3,929,533,579.80 : 5,422,728,264.84 = 2,145,386,977.56 : x - Step 2: Convert to fraction form
3,929,533,579.80/5,422,728,264.84 = 2,145,386,977.56/x - Step 3: Cross multiply
3,929,533,579.80x = 5,422,728,264.84 × 2,145,386,977.56 - Step 4: Simplify right side
3,929,533,579.80x = 11,633,850,602,234,271,744 - Step 5: Solve for x
x = 11,633,850,602,234,271,744/3,929,533,579.80 - Step 6: Final answer
x = 2,960,618,700.92
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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.