Finding the Fourth Proportional to 5,315,754,686.40, 7,973,632,029.60 and 3,138,972,350.40
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Solution
The fourth proportional to 5,315,754,686.40, 7,973,632,029.60 and 3,138,972,350.40 is: 4,708,458,525.60
Step by Step Solution
- Step 1: Write the proportion equation
5,315,754,686.40 : 7,973,632,029.60 = 3,138,972,350.40 : x - Step 2: Convert to fraction form
5,315,754,686.40/7,973,632,029.60 = 3,138,972,350.40/x - Step 3: Cross multiply
5,315,754,686.40x = 7,973,632,029.60 × 3,138,972,350.40 - Step 4: Simplify right side
5,315,754,686.40x = 25,029,010,473,178,234,880 - Step 5: Solve for x
x = 25,029,010,473,178,234,880/5,315,754,686.40 - Step 6: Final answer
x = 4,708,458,525.60
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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.