Finding the Fourth Proportional to 1,273,127,906.70, 1,909,691,860.05 and 1,212,862,497.30
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Solution
The fourth proportional to 1,273,127,906.70, 1,909,691,860.05 and 1,212,862,497.30 is: 1,819,293,745.95
Step by Step Solution
- Step 1: Write the proportion equation
1,273,127,906.70 : 1,909,691,860.05 = 1,212,862,497.30 : x - Step 2: Convert to fraction form
1,273,127,906.70/1,909,691,860.05 = 1,212,862,497.30/x - Step 3: Cross multiply
1,273,127,906.70x = 1,909,691,860.05 × 1,212,862,497.30 - Step 4: Simplify right side
1,273,127,906.70x = 2,316,193,638,453,725,184 - Step 5: Solve for x
x = 2,316,193,638,453,725,184/1,273,127,906.70 - Step 6: Final answer
x = 1,819,293,745.95
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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.