Finding the Fourth Proportional to 386,435.20, 579,652.80 and 274,460.80
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Solution
The fourth proportional to 386,435.20, 579,652.80 and 274,460.80 is: 411,691.20
Step by Step Solution
- Step 1: Write the proportion equation
386,435.20 : 579,652.80 = 274,460.80 : x - Step 2: Convert to fraction form
386,435.20/579,652.80 = 274,460.80/x - Step 3: Cross multiply
386,435.20x = 579,652.80 × 274,460.80 - Step 4: Simplify right side
386,435.20x = 159,091,971,210.24 - Step 5: Solve for x
x = 159,091,971,210.24/386,435.20 - Step 6: Final answer
x = 411,691.20
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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.