Finding the Fourth Proportional to 2,131,419,897, 2,941,210,139.88 and 1,239,283,330.68
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Solution
The fourth proportional to 2,131,419,897, 2,941,210,139.88 and 1,239,283,330.68 is: 1,710,124,177.55
Step by Step Solution
- Step 1: Write the proportion equation
2,131,419,897 : 2,941,210,139.88 = 1,239,283,330.68 : x - Step 2: Convert to fraction form
2,131,419,897/2,941,210,139.88 = 1,239,283,330.68/x - Step 3: Cross multiply
2,131,419,897x = 2,941,210,139.88 × 1,239,283,330.68 - Step 4: Simplify right side
2,131,419,897x = 3,644,992,698,380,275,200 - Step 5: Solve for x
x = 3,644,992,698,380,275,200/2,131,419,897 - Step 6: Final answer
x = 1,710,124,177.55
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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.