Finding the Fourth Proportional to 1,432,432.36, 2,148,783.41 and 421,554.79
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Solution
The fourth proportional to 1,432,432.36, 2,148,783.41 and 421,554.79 is: 632,371.88
Step by Step Solution
- Step 1: Write the proportion equation
1,432,432.36 : 2,148,783.41 = 421,554.79 : x - Step 2: Convert to fraction form
1,432,432.36/2,148,783.41 = 421,554.79/x - Step 3: Cross multiply
1,432,432.36x = 2,148,783.41 × 421,554.79 - Step 4: Simplify right side
1,432,432.36x = 905,829,939,158.03 - Step 5: Solve for x
x = 905,829,939,158.03/1,432,432.36 - Step 6: Final answer
x = 632,371.88
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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.