Finding the Fourth Proportional to 1,386,638.95, 2,080,062.99 and 413,926.40
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Solution
The fourth proportional to 1,386,638.95, 2,080,062.99 and 413,926.40 is: 620,920.81
Step by Step Solution
- Step 1: Write the proportion equation
1,386,638.95 : 2,080,062.99 = 413,926.40 : x - Step 2: Convert to fraction form
1,386,638.95/2,080,062.99 = 413,926.40/x - Step 3: Cross multiply
1,386,638.95x = 2,080,062.99 × 413,926.40 - Step 4: Simplify right side
1,386,638.95x = 860,992,983,154.30 - Step 5: Solve for x
x = 860,992,983,154.30/1,386,638.95 - Step 6: Final answer
x = 620,920.81
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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.