Finding the Fourth Proportional to 3,138,198.80, 4,707,298.20 and 1,543,875.80
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Solution
The fourth proportional to 3,138,198.80, 4,707,298.20 and 1,543,875.80 is: 2,315,813.70
Step by Step Solution
- Step 1: Write the proportion equation
3,138,198.80 : 4,707,298.20 = 1,543,875.80 : x - Step 2: Convert to fraction form
3,138,198.80/4,707,298.20 = 1,543,875.80/x - Step 3: Cross multiply
3,138,198.80x = 4,707,298.20 × 1,543,875.80 - Step 4: Simplify right side
3,138,198.80x = 7,267,483,774,363.56 - Step 5: Solve for x
x = 7,267,483,774,363.56/3,138,198.80 - Step 6: Final answer
x = 2,315,813.70
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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.