Finding the Fourth Proportional to 1,243,086,744.20, 1,715,459,438.58 and 686,169,647.24
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Solution
The fourth proportional to 1,243,086,744.20, 1,715,459,438.58 and 686,169,647.24 is: 946,913,965.03
Step by Step Solution
- Step 1: Write the proportion equation
1,243,086,744.20 : 1,715,459,438.58 = 686,169,647.24 : x - Step 2: Convert to fraction form
1,243,086,744.20/1,715,459,438.58 = 686,169,647.24/x - Step 3: Cross multiply
1,243,086,744.20x = 1,715,459,438.58 × 686,169,647.24 - Step 4: Simplify right side
1,243,086,744.20x = 1,177,096,197,824,966,912 - Step 5: Solve for x
x = 1,177,096,197,824,966,912/1,243,086,744.20 - Step 6: Final answer
x = 946,913,965.03
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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.