Finding the Fourth Proportional to 7,203,478,880.97, 9,941,111,534.84 and 3,988,388,844.99
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Solution
The fourth proportional to 7,203,478,880.97, 9,941,111,534.84 and 3,988,388,844.99 is: 5,504,148,621.45
Step by Step Solution
- Step 1: Write the proportion equation
7,203,478,880.97 : 9,941,111,534.84 = 3,988,388,844.99 : x - Step 2: Convert to fraction form
7,203,478,880.97/9,941,111,534.84 = 3,988,388,844.99/x - Step 3: Cross multiply
7,203,478,880.97x = 9,941,111,534.84 × 3,988,388,844.99 - Step 4: Simplify right side
7,203,478,880.97x = 39,649,018,352,337,321,984 - Step 5: Solve for x
x = 39,649,018,352,337,321,984/7,203,478,880.97 - Step 6: Final answer
x = 5,504,148,621.45
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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.