Finding the Fourth Proportional to 1,239,042,285.09, 1,858,018,035.96 and 656,640,078.99
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Solution
The fourth proportional to 1,239,042,285.09, 1,858,018,035.96 and 656,640,078.99 is: 984,671,083.93
Step by Step Solution
- Step 1: Write the proportion equation
1,239,042,285.09 : 1,858,018,035.96 = 656,640,078.99 : x - Step 2: Convert to fraction form
1,239,042,285.09/1,858,018,035.96 = 656,640,078.99/x - Step 3: Cross multiply
1,239,042,285.09x = 1,858,018,035.96 × 656,640,078.99 - Step 4: Simplify right side
1,239,042,285.09x = 1,220,049,109,897,619,200 - Step 5: Solve for x
x = 1,220,049,109,897,619,200/1,239,042,285.09 - Step 6: Final answer
x = 984,671,083.93
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.