Finding the Fourth Proportional to 970,561,620.80, 1,455,842,431.20 and 280,491,387.20
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Solution
The fourth proportional to 970,561,620.80, 1,455,842,431.20 and 280,491,387.20 is: 420,737,080.80
Step by Step Solution
- Step 1: Write the proportion equation
970,561,620.80 : 1,455,842,431.20 = 280,491,387.20 : x - Step 2: Convert to fraction form
970,561,620.80/1,455,842,431.20 = 280,491,387.20/x - Step 3: Cross multiply
970,561,620.80x = 1,455,842,431.20 × 280,491,387.20 - Step 4: Simplify right side
970,561,620.80x = 408,351,263,071,908,544 - Step 5: Solve for x
x = 408,351,263,071,908,544/970,561,620.80 - Step 6: Final answer
x = 420,737,080.80
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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.