Finding the Fourth Proportional to 7,278,579,629.40, 10,917,869,444.10 and 6,992,876,947.80
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Solution
The fourth proportional to 7,278,579,629.40, 10,917,869,444.10 and 6,992,876,947.80 is: 10,489,315,421.70
Step by Step Solution
- Step 1: Write the proportion equation
7,278,579,629.40 : 10,917,869,444.10 = 6,992,876,947.80 : x - Step 2: Convert to fraction form
7,278,579,629.40/10,917,869,444.10 = 6,992,876,947.80/x - Step 3: Cross multiply
7,278,579,629.40x = 10,917,869,444.10 × 6,992,876,947.80 - Step 4: Simplify right side
7,278,579,629.40x = 76,347,317,554,736,889,856 - Step 5: Solve for x
x = 76,347,317,554,736,889,856/7,278,579,629.40 - Step 6: Final answer
x = 10,489,315,421.70
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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.