Finding the Fourth Proportional to 691,101,023.20, 1,036,651,534.80 and 645,751,391.20
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Solution
The fourth proportional to 691,101,023.20, 1,036,651,534.80 and 645,751,391.20 is: 968,627,086.80
Step by Step Solution
- Step 1: Write the proportion equation
691,101,023.20 : 1,036,651,534.80 = 645,751,391.20 : x - Step 2: Convert to fraction form
691,101,023.20/1,036,651,534.80 = 645,751,391.20/x - Step 3: Cross multiply
691,101,023.20x = 1,036,651,534.80 × 645,751,391.20 - Step 4: Simplify right side
691,101,023.20x = 669,419,170,786,715,264 - Step 5: Solve for x
x = 669,419,170,786,715,264/691,101,023.20 - Step 6: Final answer
x = 968,627,086.80
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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.