Finding the Fourth Proportional to 1,211,443.80, 1,817,165.70 and 838,195.80
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Solution
The fourth proportional to 1,211,443.80, 1,817,165.70 and 838,195.80 is: 1,257,293.70
Step by Step Solution
- Step 1: Write the proportion equation
1,211,443.80 : 1,817,165.70 = 838,195.80 : x - Step 2: Convert to fraction form
1,211,443.80/1,817,165.70 = 838,195.80/x - Step 3: Cross multiply
1,211,443.80x = 1,817,165.70 × 838,195.80 - Step 4: Simplify right side
1,211,443.80x = 1,523,140,657,644.06 - Step 5: Solve for x
x = 1,523,140,657,644.06/1,211,443.80 - Step 6: Final answer
x = 1,257,293.70
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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.