Finding the Fourth Proportional to 1,432,587.48, 2,148,141.74 and 421,578.17
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Solution
The fourth proportional to 1,432,587.48, 2,148,141.74 and 421,578.17 is: 632,149.63
Step by Step Solution
- Step 1: Write the proportion equation
1,432,587.48 : 2,148,141.74 = 421,578.17 : x - Step 2: Convert to fraction form
1,432,587.48/2,148,141.74 = 421,578.17/x - Step 3: Cross multiply
1,432,587.48x = 2,148,141.74 × 421,578.17 - Step 4: Simplify right side
1,432,587.48x = 905,609,650,801.22 - Step 5: Solve for x
x = 905,609,650,801.22/1,432,587.48 - Step 6: Final answer
x = 632,149.63
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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.