Finding the Fourth Proportional to 638,135.20, 957,202.80 and 389,303.20
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Solution
The fourth proportional to 638,135.20, 957,202.80 and 389,303.20 is: 583,954.80
Step by Step Solution
- Step 1: Write the proportion equation
638,135.20 : 957,202.80 = 389,303.20 : x - Step 2: Convert to fraction form
638,135.20/957,202.80 = 389,303.20/x - Step 3: Cross multiply
638,135.20x = 957,202.80 × 389,303.20 - Step 4: Simplify right side
638,135.20x = 372,642,113,088.96 - Step 5: Solve for x
x = 372,642,113,088.96/638,135.20 - Step 6: Final answer
x = 583,954.80
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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.