Finding the Fourth Proportional to 1,213,731,850.13, 1,674,949,898.36 and 656,814,912.38
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Solution
The fourth proportional to 1,213,731,850.13, 1,674,949,898.36 and 656,814,912.38 is: 906,404,549.42
Step by Step Solution
- Step 1: Write the proportion equation
1,213,731,850.13 : 1,674,949,898.36 = 656,814,912.38 : x - Step 2: Convert to fraction form
1,213,731,850.13/1,674,949,898.36 = 656,814,912.38/x - Step 3: Cross multiply
1,213,731,850.13x = 1,674,949,898.36 × 656,814,912.38 - Step 4: Simplify right side
1,213,731,850.13x = 1,100,132,070,728,017,792 - Step 5: Solve for x
x = 1,100,132,070,728,017,792/1,213,731,850.13 - Step 6: Final answer
x = 906,404,549.42
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Double scale
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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.