Finding the Fourth Proportional to 621,408.40, 929,970.84 and 381,362.96
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Solution
The fourth proportional to 621,408.40, 929,970.84 and 381,362.96 is: 570,730.03
Step by Step Solution
- Step 1: Write the proportion equation
621,408.40 : 929,970.84 = 381,362.96 : x - Step 2: Convert to fraction form
621,408.40/929,970.84 = 381,362.96/x - Step 3: Cross multiply
621,408.40x = 929,970.84 × 381,362.96 - Step 4: Simplify right side
621,408.40x = 354,656,432,256.09 - Step 5: Solve for x
x = 354,656,432,256.09/621,408.40 - Step 6: Final answer
x = 570,730.03
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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.