Finding the Fourth Proportional to 1,432,643.49, 2,148,225.57 and 421,634.07
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Solution
The fourth proportional to 1,432,643.49, 2,148,225.57 and 421,634.07 is: 632,233.42
Step by Step Solution
- Step 1: Write the proportion equation
1,432,643.49 : 2,148,225.57 = 421,634.07 : x - Step 2: Convert to fraction form
1,432,643.49/2,148,225.57 = 421,634.07/x - Step 3: Cross multiply
1,432,643.49x = 2,148,225.57 × 421,634.07 - Step 4: Simplify right side
1,432,643.49x = 905,765,090,357.17 - Step 5: Solve for x
x = 905,765,090,357.17/1,432,643.49 - Step 6: Final answer
x = 632,233.42
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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.