Finding the Fourth Proportional to 7,984,121,851.80, 11,976,182,777.70 and 5,917,879,243.80
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Solution
The fourth proportional to 7,984,121,851.80, 11,976,182,777.70 and 5,917,879,243.80 is: 8,876,818,865.70
Step by Step Solution
- Step 1: Write the proportion equation
7,984,121,851.80 : 11,976,182,777.70 = 5,917,879,243.80 : x - Step 2: Convert to fraction form
7,984,121,851.80/11,976,182,777.70 = 5,917,879,243.80/x - Step 3: Cross multiply
7,984,121,851.80x = 11,976,182,777.70 × 5,917,879,243.80 - Step 4: Simplify right side
7,984,121,851.80x = 70,873,603,480,105,869,312 - Step 5: Solve for x
x = 70,873,603,480,105,869,312/7,984,121,851.80 - Step 6: Final answer
x = 8,876,818,865.70
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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.