Finding the Fourth Proportional to 1,119,957,770.28, 1,545,310,991.46 and 643,556,088.03
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Solution
The fourth proportional to 1,119,957,770.28, 1,545,310,991.46 and 643,556,088.03 is: 887,974,817.31
Step by Step Solution
- Step 1: Write the proportion equation
1,119,957,770.28 : 1,545,310,991.46 = 643,556,088.03 : x - Step 2: Convert to fraction form
1,119,957,770.28/1,545,310,991.46 = 643,556,088.03/x - Step 3: Cross multiply
1,119,957,770.28x = 1,545,310,991.46 × 643,556,088.03 - Step 4: Simplify right side
1,119,957,770.28x = 994,494,296,453,758,336 - Step 5: Solve for x
x = 994,494,296,453,758,336/1,119,957,770.28 - Step 6: Final answer
x = 887,974,817.31
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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.