Finding the Fourth Proportional to 1,386,349.88, 1,912,947.12 and 782,724.92
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Solution
The fourth proportional to 1,386,349.88, 1,912,947.12 and 782,724.92 is: 1,080,038.60
Step by Step Solution
- Step 1: Write the proportion equation
1,386,349.88 : 1,912,947.12 = 782,724.92 : x - Step 2: Convert to fraction form
1,386,349.88/1,912,947.12 = 782,724.92/x - Step 3: Cross multiply
1,386,349.88x = 1,912,947.12 × 782,724.92 - Step 4: Simplify right side
1,386,349.88x = 1,497,311,381,466.23 - Step 5: Solve for x
x = 1,497,311,381,466.23/1,386,349.88 - Step 6: Final answer
x = 1,080,038.60
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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.