Finding the Fourth Proportional to 1,818,881.70, 2,728,322.55 and 620,405.70
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Solution
The fourth proportional to 1,818,881.70, 2,728,322.55 and 620,405.70 is: 930,608.55
Step by Step Solution
- Step 1: Write the proportion equation
1,818,881.70 : 2,728,322.55 = 620,405.70 : x - Step 2: Convert to fraction form
1,818,881.70/2,728,322.55 = 620,405.70/x - Step 3: Cross multiply
1,818,881.70x = 2,728,322.55 × 620,405.70 - Step 4: Simplify right side
1,818,881.70x = 1,692,666,861,458.53 - Step 5: Solve for x
x = 1,692,666,861,458.53/1,818,881.70 - Step 6: Final answer
x = 930,608.55
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1.5x scale
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.