Finding the Fourth Proportional to 693,767,036.62, 957,310,249.11 and 396,428,552.62
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Solution
The fourth proportional to 693,767,036.62, 957,310,249.11 and 396,428,552.62 is: 547,020,968.76
Step by Step Solution
- Step 1: Write the proportion equation
693,767,036.62 : 957,310,249.11 = 396,428,552.62 : x - Step 2: Convert to fraction form
693,767,036.62/957,310,249.11 = 396,428,552.62/x - Step 3: Cross multiply
693,767,036.62x = 957,310,249.11 × 396,428,552.62 - Step 4: Simplify right side
693,767,036.62x = 379,505,116,462,968,960 - Step 5: Solve for x
x = 379,505,116,462,968,960/693,767,036.62 - Step 6: Final answer
x = 547,020,968.76
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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.