Finding the Fourth Proportional to 1,398,746,239.92, 1,930,259,817.18 and 763,666,711.92
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Solution
The fourth proportional to 1,398,746,239.92, 1,930,259,817.18 and 763,666,711.92 is: 1,053,854,606.12
Step by Step Solution
- Step 1: Write the proportion equation
1,398,746,239.92 : 1,930,259,817.18 = 763,666,711.92 : x - Step 2: Convert to fraction form
1,398,746,239.92/1,930,259,817.18 = 763,666,711.92/x - Step 3: Cross multiply
1,398,746,239.92x = 1,930,259,817.18 × 763,666,711.92 - Step 4: Simplify right side
1,398,746,239.92x = 1,474,075,167,737,150,976 - Step 5: Solve for x
x = 1,474,075,167,737,150,976/1,398,746,239.92 - Step 6: Final answer
x = 1,053,854,606.12
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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.