Finding the Fourth Proportional to 1,912,970.40, 2,639,866.98 and 1,053,610.68
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Solution
The fourth proportional to 1,912,970.40, 2,639,866.98 and 1,053,610.68 is: 1,453,965.02
Step by Step Solution
- Step 1: Write the proportion equation
1,912,970.40 : 2,639,866.98 = 1,053,610.68 : x - Step 2: Convert to fraction form
1,912,970.40/2,639,866.98 = 1,053,610.68/x - Step 3: Cross multiply
1,912,970.40x = 2,639,866.98 × 1,053,610.68 - Step 4: Simplify right side
1,912,970.40x = 2,781,392,043,907.35 - Step 5: Solve for x
x = 2,781,392,043,907.35/1,912,970.40 - Step 6: Final answer
x = 1,453,965.02
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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.