Finding the Fourth Proportional to 7,100,801,921.13, 9,799,118,130.29 and 3,929,119,517.85
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Solution
The fourth proportional to 7,100,801,921.13, 9,799,118,130.29 and 3,929,119,517.85 is: 5,422,191,286.43
Step by Step Solution
- Step 1: Write the proportion equation
7,100,801,921.13 : 9,799,118,130.29 = 3,929,119,517.85 : x - Step 2: Convert to fraction form
7,100,801,921.13/9,799,118,130.29 = 3,929,119,517.85/x - Step 3: Cross multiply
7,100,801,921.13x = 9,799,118,130.29 × 3,929,119,517.85 - Step 4: Simplify right side
7,100,801,921.13x = 38,501,906,303,420,588,032 - Step 5: Solve for x
x = 38,501,906,303,420,588,032/7,100,801,921.13 - Step 6: Final answer
x = 5,422,191,286.43
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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.