Finding the Fourth Proportional to 1,432,530.20, 2,148,561.68 and 421,415.65
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Solution
The fourth proportional to 1,432,530.20, 2,148,561.68 and 421,415.65 is: 632,054.75
Step by Step Solution
- Step 1: Write the proportion equation
1,432,530.20 : 2,148,561.68 = 421,415.65 : x - Step 2: Convert to fraction form
1,432,530.20/2,148,561.68 = 421,415.65/x - Step 3: Cross multiply
1,432,530.20x = 2,148,561.68 × 421,415.65 - Step 4: Simplify right side
1,432,530.20x = 905,437,516,942.29 - Step 5: Solve for x
x = 905,437,516,942.29/1,432,530.20 - Step 6: Final answer
x = 632,054.75
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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.