Finding the Fourth Proportional to 438,760,698.75, 605,489,851.76 and 243,190,410.75
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Solution
The fourth proportional to 438,760,698.75, 605,489,851.76 and 243,190,410.75 is: 335,602,815.32
Step by Step Solution
- Step 1: Write the proportion equation
438,760,698.75 : 605,489,851.76 = 243,190,410.75 : x - Step 2: Convert to fraction form
438,760,698.75/605,489,851.76 = 243,190,410.75/x - Step 3: Cross multiply
438,760,698.75x = 605,489,851.76 × 243,190,410.75 - Step 4: Simplify right side
438,760,698.75x = 147,249,325,753,255,072 - Step 5: Solve for x
x = 147,249,325,753,255,072/438,760,698.75 - Step 6: Final answer
x = 335,602,815.32
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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.