Finding the Fourth Proportional to 13,348,930,030.97, 18,421,543,621.80 and 7,245,284,778.68
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Solution
The fourth proportional to 13,348,930,030.97, 18,421,543,621.80 and 7,245,284,778.68 is: 9,998,503,946.99
Step by Step Solution
- Step 1: Write the proportion equation
13,348,930,030.97 : 18,421,543,621.80 = 7,245,284,778.68 : x - Step 2: Convert to fraction form
13,348,930,030.97/18,421,543,621.80 = 7,245,284,778.68/x - Step 3: Cross multiply
13,348,930,030.97x = 18,421,543,621.80 × 7,245,284,778.68 - Step 4: Simplify right side
13,348,930,030.97x = 133,469,329,602,725,068,800 - Step 5: Solve for x
x = 133,469,329,602,725,068,800/13,348,930,030.97 - Step 6: Final answer
x = 9,998,503,946.99
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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.