Finding the Fourth Proportional to 989,066,979.58, 1,364,915,117.68 and 543,059,231.26
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Solution
The fourth proportional to 989,066,979.58, 1,364,915,117.68 and 543,059,231.26 is: 749,423,213.84
Step by Step Solution
- Step 1: Write the proportion equation
989,066,979.58 : 1,364,915,117.68 = 543,059,231.26 : x - Step 2: Convert to fraction form
989,066,979.58/1,364,915,117.68 = 543,059,231.26/x - Step 3: Cross multiply
989,066,979.58x = 1,364,915,117.68 × 543,059,231.26 - Step 4: Simplify right side
989,066,979.58x = 741,229,754,542,453,248 - Step 5: Solve for x
x = 741,229,754,542,453,248/989,066,979.58 - Step 6: Final answer
x = 749,423,213.84
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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.