Finding the Fourth Proportional to 1,912,959.28, 2,639,851.69 and 1,053,599.50
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Solution
The fourth proportional to 1,912,959.28, 2,639,851.69 and 1,053,599.50 is: 1,453,949.62
Step by Step Solution
- Step 1: Write the proportion equation
1,912,959.28 : 2,639,851.69 = 1,053,599.50 : x - Step 2: Convert to fraction form
1,912,959.28/2,639,851.69 = 1,053,599.50/x - Step 3: Cross multiply
1,912,959.28x = 2,639,851.69 × 1,053,599.50 - Step 4: Simplify right side
1,912,959.28x = 2,781,346,402,190.90 - Step 5: Solve for x
x = 2,781,346,402,190.90/1,912,959.28 - Step 6: Final answer
x = 1,453,949.62
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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.