Finding the Fourth Proportional to 1,145,212,949.32, 1,717,690,781.82 and 316,284,435.08
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Solution
The fourth proportional to 1,145,212,949.32, 1,717,690,781.82 and 316,284,435.08 is: 474,391,124.28
Step by Step Solution
- Step 1: Write the proportion equation
1,145,212,949.32 : 1,717,690,781.82 = 316,284,435.08 : x - Step 2: Convert to fraction form
1,145,212,949.32/1,717,690,781.82 = 316,284,435.08/x - Step 3: Cross multiply
1,145,212,949.32x = 1,717,690,781.82 × 316,284,435.08 - Step 4: Simplify right side
1,145,212,949.32x = 543,278,858,570,062,208 - Step 5: Solve for x
x = 543,278,858,570,062,208/1,145,212,949.32 - Step 6: Final answer
x = 474,391,124.28
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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.