Finding the Fourth Proportional to 7,892,278,431.15, 10,892,747,558.01 and 4,720,811,261.48
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Solution
The fourth proportional to 7,892,278,431.15, 10,892,747,558.01 and 4,720,811,261.48 is: 6,515,558,946.49
Step by Step Solution
- Step 1: Write the proportion equation
7,892,278,431.15 : 10,892,747,558.01 = 4,720,811,261.48 : x - Step 2: Convert to fraction form
7,892,278,431.15/10,892,747,558.01 = 4,720,811,261.48/x - Step 3: Cross multiply
7,892,278,431.15x = 10,892,747,558.01 × 4,720,811,261.48 - Step 4: Simplify right side
7,892,278,431.15x = 51,422,605,340,257,918,976 - Step 5: Solve for x
x = 51,422,605,340,257,918,976/7,892,278,431.15 - Step 6: Final answer
x = 6,515,558,946.49
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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.