Finding the Fourth Proportional to 12,778,588.84, 17,634,815.94 and 6,977,738.92
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Solution
The fourth proportional to 12,778,588.84, 17,634,815.94 and 6,977,738.92 is: 9,629,478.11
Step by Step Solution
- Step 1: Write the proportion equation
12,778,588.84 : 17,634,815.94 = 6,977,738.92 : x - Step 2: Convert to fraction form
12,778,588.84/17,634,815.94 = 6,977,738.92/x - Step 3: Cross multiply
12,778,588.84x = 17,634,815.94 × 6,977,738.92 - Step 4: Simplify right side
12,778,588.84x = 123,051,141,531,574.39 - Step 5: Solve for x
x = 123,051,141,531,574.39/12,778,588.84 - Step 6: Final answer
x = 9,629,478.11
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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.