Finding the Fourth Proportional to 665,621.70, 998,432.55 and 413,679.30
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Solution
The fourth proportional to 665,621.70, 998,432.55 and 413,679.30 is: 620,518.95
Step by Step Solution
- Step 1: Write the proportion equation
665,621.70 : 998,432.55 = 413,679.30 : x - Step 2: Convert to fraction form
665,621.70/998,432.55 = 413,679.30/x - Step 3: Cross multiply
665,621.70x = 998,432.55 × 413,679.30 - Step 4: Simplify right side
665,621.70x = 413,030,878,381.22 - Step 5: Solve for x
x = 413,030,878,381.22/665,621.70 - Step 6: Final answer
x = 620,518.95
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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.