Finding the Fourth Proportional to 1,273,128,277.20, 1,909,692,415.80 and 1,212,862,867.80
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Solution
The fourth proportional to 1,273,128,277.20, 1,909,692,415.80 and 1,212,862,867.80 is: 1,819,294,301.70
Step by Step Solution
- Step 1: Write the proportion equation
1,273,128,277.20 : 1,909,692,415.80 = 1,212,862,867.80 : x - Step 2: Convert to fraction form
1,273,128,277.20/1,909,692,415.80 = 1,212,862,867.80/x - Step 3: Cross multiply
1,273,128,277.20x = 1,909,692,415.80 × 1,212,862,867.80 - Step 4: Simplify right side
1,273,128,277.20x = 2,316,195,020,043,098,112 - Step 5: Solve for x
x = 2,316,195,020,043,098,112/1,273,128,277.20 - Step 6: Final answer
x = 1,819,294,301.70
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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.