Finding the Fourth Proportional to 1,689,449.37, 2,330,855.87 and 1,281,125.85
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Solution
The fourth proportional to 1,689,449.37, 2,330,855.87 and 1,281,125.85 is: 1,767,510.62
Step by Step Solution
- Step 1: Write the proportion equation
1,689,449.37 : 2,330,855.87 = 1,281,125.85 : x - Step 2: Convert to fraction form
1,689,449.37/2,330,855.87 = 1,281,125.85/x - Step 3: Cross multiply
1,689,449.37x = 2,330,855.87 × 1,281,125.85 - Step 4: Simplify right side
1,689,449.37x = 2,986,119,701,275.61 - Step 5: Solve for x
x = 2,986,119,701,275.61/1,689,449.37 - Step 6: Final answer
x = 1,767,510.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.