Finding the Fourth Proportional to 1,117,867.68, 1,677,299.85 and 407,729.70
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Solution
The fourth proportional to 1,117,867.68, 1,677,299.85 and 407,729.70 is: 611,776.31
Step by Step Solution
- Step 1: Write the proportion equation
1,117,867.68 : 1,677,299.85 = 407,729.70 : x - Step 2: Convert to fraction form
1,117,867.68/1,677,299.85 = 407,729.70/x - Step 3: Cross multiply
1,117,867.68x = 1,677,299.85 × 407,729.70 - Step 4: Simplify right side
1,117,867.68x = 683,884,964,650.55 - Step 5: Solve for x
x = 683,884,964,650.55/1,117,867.68 - Step 6: Final answer
x = 611,776.31
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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.