Finding the Fourth Proportional to 1,912,660.40, 2,639,376.60 and 1,053,060.05
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Solution
The fourth proportional to 1,912,660.40, 2,639,376.60 and 1,053,060.05 is: 1,453,170.70
Step by Step Solution
- Step 1: Write the proportion equation
1,912,660.40 : 2,639,376.60 = 1,053,060.05 : x - Step 2: Convert to fraction form
1,912,660.40/2,639,376.60 = 1,053,060.05/x - Step 3: Cross multiply
1,912,660.40x = 2,639,376.60 × 1,053,060.05 - Step 4: Simplify right side
1,912,660.40x = 2,779,422,041,167.95 - Step 5: Solve for x
x = 2,779,422,041,167.95/1,912,660.40 - Step 6: Final answer
x = 1,453,170.70
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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.